Recognised as Number
-731,000,000,000,000,000,000
- Negative
- Even
- 21 digits
-731,000,000,000,000,000,000 is an even 21-digit integer and the negative of 731,000,000,000,000,000,000. It has 1,444 divisors and a digital root of 2.
Number properties
ParityEvendivisible by 2
SignNegative
Absolute value731,000,000,000,000,000,000
Digit count21
Digit sum11
Digit product0zero, because one of the digits is zero
Multiplicative persistence1times the digit product can be taken before one digit is left
Digital root2repeated digit sum
PalindromicNoreads differently backwards
Factors & divisors
Prime factorisation−1 × 2^18 × 5^18 × 17 × 43
Distinct prime factors42, 5, 17, 43
Number of divisors1,444
Sum of divisors σ(n)1,979,996,223,449,603,222,424
SquarefreeNohas a repeated prime factor
All divisors1,444 divisors, too many to listlisting is capped at 512
Arithmetic
Previous number-731,000,000,000,000,000,001
Next number-730,999,999,999,999,999,999
Square534,361,000,000,000,000,000,000,000,000,000,000,000,000
Cube-390,617,891,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000
Cube root9,008,222≈
Negation731,000,000,000,000,000,000
Representations
Decimal-731,000,000,000,000,000,000
Binary100111101000001010100110110010111111101111101010001100000000000000000070 bits
Octal117202515457737243000000
Hexadecimal27A0A9B2FEFA8C0000
Base 364A9SMPGCDO15VK
In wordsminus seven hundred and thirty-one quintillion
Ordinalminus seven hundred and thirty-one quintillionth
Engineering notation-731 × 10^18
In other bases
Ternary20200101021001000220000222100101001202110002base 3; the most digit-efficient integer base after e: 44 digits
Quinary343024033024000000000000000000base 5; one hand: 30 digits
Septenary3546520103540246140315013base 7: 25 digits
Nonary6611231026028311052402base 9; each digit is two ternary digits: 22 digits
Duodecimal23559a96792b809274a8base 12; divides by 2, 3, 4 and 6, which is why eggs and inches come in twelves: 20 digits
Vigesimal12636fif000000000base 20; hands and feet, and the Mayan and Yoruba systems: 17 digits
Sexagesimal20:8:56:25:15:41:0:54:19:15:33:20base 60; Babylonian, and still how an hour and a circle are divided: 12 digits
Balanced ternaryT1T100T0TT1T00T00T01000T001T00T0T0T11T1TT00T1digits −1, 0 and +1 written T, 0 and 1; negation is swapping T and 1, so no sign is needed
Negabinary1010011010000010101010010111010000000100011010101101000000000000000000base −2; place values alternate 1, −2, 4, −8, so every integer has exactly one form without a sign
Bit-level
Bit length70 bitsto write the magnitude
Set bits30the population count, or Hamming weight
Zero bits40within that length
Bit parityeven30 set bits, so even; not the same as the number itself being even
Highest set bitbit 69worth 590,295,810,358,705,651,712
Lowest set bitbit 1818 trailing zeros
Power of twoNo
Bytes927 a0 a9 b2 fe fa 8c 00 00
Gray code1101000111000011111101011010111000000110000111110010100000000000000000n XOR (n >> 1); successive values differ in exactly one bit
Nearest landmarks
Nearest square below730,999,999,989,642,165,561
Nearest square above731,000,000,043,716,188,900
Powers & multiples
-731,000,000,000,000,000,000 to the power 2534361000000000000000000000000… (42 digits)
-731,000,000,000,000,000,000 to the power 3-39061789100000000000000000000… (64 digits)
-731,000,000,000,000,000,000 to the power 4285541678321000000000000000000… (84 digits)
-731,000,000,000,000,000,000 to the power 5-20873096685265100000000000000… (106 digits)
First ten multiples-731,000,000,000,000,000,000, -1,462,000,000,000,000,000,000, -2,193,000,000,000,000,000,000, -2,924,000,000,000,000,000,000, -3,655,000,000,000,000,000,000, -4,386,000,000,000,000,000,000, -5,117,000,000,000,000,000,000, -5,848,000,000,000,000,000,000, -6,579,000,000,000,000,000,000, -7,310,000,000,000,000,000,000
Powers of twoBetween 2^69 (590,295,810,358,705,651,712) and 2^70 (1,180,591,620,717,411,303,424)
Divisibility tests
Divisible by 2Yes
Divisible by 3No, remainder 2
Divisible by 4Yes
Divisible by 5Yes
Divisible by 6No, remainder 2
Divisible by 7No, remainder 3
Divisible by 8Yes
Divisible by 9No, remainder 2
Divisible by 10Yes
Divisible by 11No, remainder 5
Divisible by 12No, remainder 8
Divisible by 100Yes
Keep nerding
Every link below is a page Nerdulator can generate from what it already knows about this value.
Neighbouring numbers
Derived from -731,000,000,000,000,000,000
Nerdulate something else
Nothing in mind? Surprise me · today’s page