31885191336264 has 48 divisors (see below), whose sum is σ = 92727342154800. Its totient is φ = 9110054667168.

The previous prime is 31885191336233. The next prime is 31885191336269. The reversal of 31885191336264 is 46263319158813.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 31885191336198 and 31885191336207.

It is not an unprimeable number, because it can be changed into a prime (31885191336269) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 13556627794 + ... + 13556630145.

It is an arithmetic number, because the mean of its divisors is an integer number (1931819628225).

Almost surely, 2^{31885191336264} is an apocalyptic number.

It is an amenable number.

31885191336264 is an abundant number, since it is smaller than the sum of its proper divisors (60842150818536).

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

31885191336264 is a wasteful number, since it uses less digits than its factorization.

31885191336264 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27113257962 (or 27113257951 counting only the distinct ones).

The product of its digits is 22394880, while the sum is 60.

The spelling of 31885191336264 in words is "thirty-one trillion, eight hundred eighty-five billion, one hundred ninety-one million, three hundred thirty-six thousand, two hundred sixty-four".