31375491324 has 48 divisors (see below), whose sum is σ = 75415622016. Its totient is φ = 10145044800.

The previous prime is 31375491319. The next prime is 31375491347. The reversal of 31375491324 is 42319457313.

It is a hoax number, since the sum of its digits (42) coincides with the sum of the digits of its distinct prime factors.

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, 40219 + ... + 253709.

It is an arithmetic number, because the mean of its divisors is an integer number (1571158792).

Almost surely, 2^31375491324 is an apocalyptic number.

It is an amenable number.

31375491324 is an abundant number, since it is smaller than the sum of its proper divisors (44040130692).

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

31375491324 is a wasteful number, since it uses less digits than its factorization.

31375491324 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 213866 (or 213864 counting only the distinct ones).

The product of its digits is 272160, while the sum is 42.

The spelling of 31375491324 in words is "thirty-one billion, three hundred seventy-five million, four hundred ninety-one thousand, three hundred twenty-four".