Base | Representation |
---|---|
bin | 11101100110111001… |
… | …100001111011000000 |
3 | 10001001120121122102200 |
4 | 131212321201323000 |
5 | 1010102012101011 |
6 | 22334334113200 |
7 | 2203546063056 |
oct | 354671417300 |
9 | 101046548380 |
10 | 31791128256 |
11 | 12534299218 |
12 | 61b294b800 |
13 | 2cc8499cc4 |
14 | 17782921d6 |
15 | c60ecd856 |
hex | 766e61ec0 |
31791128256 has 126 divisors (see below), whose sum is σ = 96799549860. Its totient is φ = 9973635072.
The previous prime is 31791128233. The next prime is 31791128279. The reversal of 31791128256 is 65282119713.
31791128256 is a `hidden beast` number, since 317 + 9 + 1 + 1 + 282 + 56 = 666.
It is an interprime number because it is at equal distance from previous prime (31791128233) and next prime (31791128279).
It is an unprimeable number.
It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 70975 + ... + 261953.
Almost surely, 231791128256 is an apocalyptic number.
31791128256 is a gapful number since it is divisible by the number (36) formed by its first and last digit.
It is an amenable number.
It is a practical number, because each smaller number is the sum of distinct divisors of 31791128256, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (48399774930).
31791128256 is an abundant number, since it is smaller than the sum of its proper divisors (65008421604).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
31791128256 is a wasteful number, since it uses less digits than its factorization.
31791128256 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 191031 (or 191001 counting only the distinct ones).
The product of its digits is 181440, while the sum is 45.
The spelling of 31791128256 in words is "thirty-one billion, seven hundred ninety-one million, one hundred twenty-eight thousand, two hundred fifty-six".
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