Base | Representation |
---|---|
bin | 11101010100111100… |
… | …100010000000000000 |
3 | 10000021120211221101222 |
4 | 131110330202000000 |
5 | 1003442410100440 |
6 | 22244414214212 |
7 | 2163230642603 |
oct | 352474420000 |
9 | 100246757358 |
10 | 31489925120 |
11 | 1239a272905 |
12 | 6129ab4368 |
13 | 2c7ac6a6b4 |
14 | 174a28833a |
15 | c448332b5 |
hex | 754f22000 |
31489925120 has 224 divisors, whose sum is σ = 81485110080. Its totient is φ = 11643125760.
The previous prime is 31489925107. The next prime is 31489925149. The reversal of 31489925120 is 2152998413.
It is an unprimeable number.
It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 33463850 + ... + 33464790.
Almost surely, 231489925120 is an apocalyptic number.
It is an amenable number.
It is a practical number, because each smaller number is the sum of distinct divisors of 31489925120, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (40742555040).
31489925120 is an abundant number, since it is smaller than the sum of its proper divisors (49995184960).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
31489925120 is an equidigital number, since it uses as much as digits as its factorization.
31489925120 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 1034 (or 1010 counting only the distinct ones).
The product of its (nonzero) digits is 155520, while the sum is 44.
The spelling of 31489925120 in words is "thirty-one billion, four hundred eighty-nine million, nine hundred twenty-five thousand, one hundred twenty".
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