31296165144 has 64 divisors (see below), whose sum is σ = 79051991040. Its totient is φ = 10324279680.

The previous prime is 31296165133. The next prime is 31296165151. The reversal of 31296165144 is 44156169213.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 31296165096 and 31296165105.

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, 1159369 + ... + 1186055.

It is an arithmetic number, because the mean of its divisors is an integer number (1235187360).

Almost surely, 2^31296165144 is an apocalyptic number.

It is an amenable number.

31296165144 is an abundant number, since it is smaller than the sum of its proper divisors (47755825896).

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

31296165144 is a wasteful number, since it uses less digits than its factorization.

31296165144 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27200 (or 27196 counting only the distinct ones).

The product of its digits is 155520, while the sum is 42.

The spelling of 31296165144 in words is "thirty-one billion, two hundred ninety-six million, one hundred sixty-five thousand, one hundred forty-four".