31204431340402 has 16 divisors (see below), whose sum is σ = 46894405997952. Its totient is φ = 15572979742320.

The previous prime is 31204431340361. The next prime is 31204431340483. The reversal of 31204431340402 is 20404313440213.

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, 607288 + ... + 7923235.

It is an arithmetic number, because the mean of its divisors is an integer number (2930900374872).

Almost surely, 2^{31204431340402} is an apocalyptic number.

31204431340402 is a deficient number, since it is larger than the sum of its proper divisors (15689974657550).

31204431340402 is a wasteful number, since it uses less digits than its factorization.

31204431340402 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8533953.

The product of its (nonzero) digits is 27648, while the sum is 31.

Adding to 31204431340402 its reverse (20404313440213), we get a palindrome (51608744780615).

The spelling of 31204431340402 in words is "thirty-one trillion, two hundred four billion, four hundred thirty-one million, three hundred forty thousand, four hundred two".