31413442402 has 32 divisors (see below), whose sum is σ = 48557127024. Its totient is φ = 15232588800.

The previous prime is 31413442399. The next prime is 31413442447. The reversal of 31413442402 is 20424431413.

It can be written as a sum of positive squares in 8 ways, for example, as 22611437641 + 8802004761 = 150371^2 + 93819^2 .

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, 10978452 + ... + 10981312.

Almost surely, 2^31413442402 is an apocalyptic number.

31413442402 is a deficient number, since it is larger than the sum of its proper divisors (17143684622).

31413442402 is a wasteful number, since it uses less digits than its factorization.

31413442402 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3654.

The product of its (nonzero) digits is 9216, while the sum is 28.

Adding to 31413442402 its reverse (20424431413), we get a palindrome (51837873815).

The spelling of 31413442402 in words is "thirty-one billion, four hundred thirteen million, four hundred forty-two thousand, four hundred two".