31325501912 has 32 divisors (see below), whose sum is σ = 62783894880. Its totient is φ = 14616349440.

The previous prime is 31325501887. The next prime is 31325501917. The reversal of 31325501912 is 21910552313.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31325501917) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2068643 + ... + 2083730.

It is an arithmetic number, because the mean of its divisors is an integer number (1961996715).

Almost surely, 2^31325501912 is an apocalyptic number.

It is an amenable number.

31325501912 is an abundant number, since it is smaller than the sum of its proper divisors (31458392968).

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

31325501912 is a wasteful number, since it uses less digits than its factorization.

31325501912 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4152443 (or 4152439 counting only the distinct ones).

The product of its (nonzero) digits is 8100, while the sum is 32.

The spelling of 31325501912 in words is "thirty-one billion, three hundred twenty-five million, five hundred one thousand, nine hundred twelve".