31261604436204 has 48 divisors (see below), whose sum is σ = 77263340128128. Its totient is φ = 9803906558208.

The previous prime is 31261604436199. The next prime is 31261604436239. The reversal of 31261604436204 is 40263440616213.

It is a super-5 number, since 5×31261604436204⁵ (a number of 69 digits) contains 55555 as substring. Note that it is a super-d number also for d = 2.

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, 28010842 + ... + 29105505.

It is an arithmetic number, because the mean of its divisors is an integer number (1609652919336).

Almost surely, 2^{31261604436204} is an apocalyptic number.

31261604436204 is a gapful number since it is divisible by the number (34) formed by its first and last digit.

It is an amenable number.

31261604436204 is an abundant number, since it is smaller than the sum of its proper divisors (46001735691924).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

31261604436204 is a wasteful number, since it uses less digits than its factorization.

31261604436204 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 57119054 (or 57119052 counting only the distinct ones).

The product of its (nonzero) digits is 497664, while the sum is 42.

The spelling of 31261604436204 in words is "thirty-one trillion, two hundred sixty-one billion, six hundred four million, four hundred thirty-six thousand, two hundred four".