31243088004 has 12 divisors (see below), whose sum is σ = 72900538704. Its totient is φ = 10414362664.

The previous prime is 31243087999. The next prime is 31243088057. The reversal of 31243088004 is 40088034213.

It is a tau number, because it is divible by the number of its divisors (12).

It is a super-2 number, since 2×31243088004² (a number of 22 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1301795322 + ... + 1301795345.

It is an arithmetic number, because the mean of its divisors is an integer number (6075044892).

Almost surely, 2^31243088004 is an apocalyptic number.

It is an amenable number.

31243088004 is an abundant number, since it is smaller than the sum of its proper divisors (41657450700).

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

31243088004 is a wasteful number, since it uses less digits than its factorization.

31243088004 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2603590674 (or 2603590672 counting only the distinct ones).

The product of its (nonzero) digits is 18432, while the sum is 33.

The spelling of 31243088004 in words is "thirty-one billion, two hundred forty-three million, eighty-eight thousand, four".