Base | Representation |
---|---|
bin | 11101110001100101… |
… | …010010000101110110 |
3 | 10001112001220001202110 |
4 | 131301211102011312 |
5 | 1010433403314120 |
6 | 22404215551450 |
7 | 2211153442353 |
oct | 356145220566 |
9 | 101461801673 |
10 | 31970369910 |
11 | 12616493116 |
12 | 624298b586 |
13 | 302666695b |
14 | 1793dcd62a |
15 | c71ad72e0 |
hex | 771952176 |
31970369910 has 32 divisors (see below), whose sum is σ = 76794946560. Its totient is φ = 8518092128.
The previous prime is 31970369897. The next prime is 31970369989. The reversal of 31970369910 is 1996307913.
It is a self number, because there is not a number n which added to its sum of digits gives 31970369910.
It is a congruent number.
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, 423270 + ... + 493049.
It is an arithmetic number, because the mean of its divisors is an integer number (2399842080).
Almost surely, 231970369910 is an apocalyptic number.
31970369910 is a gapful number since it is divisible by the number (30) formed by its first and last digit.
31970369910 is an abundant number, since it is smaller than the sum of its proper divisors (44824576650).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
31970369910 is a wasteful number, since it uses less digits than its factorization.
31970369910 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 917492.
The product of its (nonzero) digits is 275562, while the sum is 48.
The spelling of 31970369910 in words is "thirty-one billion, nine hundred seventy million, three hundred sixty-nine thousand, nine hundred ten".
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