31077868236 has 24 divisors (see below), whose sum is σ = 72520074480. Its totient is φ = 10358568192.

The previous prime is 31077868231. The next prime is 31077868273. The reversal of 31077868236 is 63286877013.

It is not an unprimeable number, because it can be changed into a prime (31077868231) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 106560 + ... + 271128.

It is an arithmetic number, because the mean of its divisors is an integer number (3021669770).

Almost surely, 2^31077868236 is an apocalyptic number.

It is an amenable number.

31077868236 is an abundant number, since it is smaller than the sum of its proper divisors (41442206244).

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

31077868236 is a wasteful number, since it uses less digits than its factorization.

31077868236 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 180313 (or 180311 counting only the distinct ones).

The product of its (nonzero) digits is 2032128, while the sum is 51.

The spelling of 31077868236 in words is "thirty-one billion, seventy-seven million, eight hundred sixty-eight thousand, two hundred thirty-six".