31204312402 has 16 divisors (see below), whose sum is σ = 47632508352. Its totient is φ = 15328059120.

The previous prime is 31204312397. The next prime is 31204312411. The reversal of 31204312402 is 20421340213.

It is a super-2 number, since 2×31204312402² (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 7 ways as a sum of consecutive naturals, for example, 262174 + ... + 362137.

It is an arithmetic number, because the mean of its divisors is an integer number (2977031772).

Almost surely, 2^31204312402 is an apocalyptic number.

31204312402 is a deficient number, since it is larger than the sum of its proper divisors (16428195950).

31204312402 is a wasteful number, since it uses less digits than its factorization.

31204312402 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 624753.

The product of its (nonzero) digits is 1152, while the sum is 22.

Adding to 31204312402 its reverse (20421340213), we get a palindrome (51625652615).

The spelling of 31204312402 in words is "thirty-one billion, two hundred four million, three hundred twelve thousand, four hundred two".