31203343423402 has 16 divisors (see below), whose sum is σ = 46816401162240. Its totient is φ = 15597876671568.

The previous prime is 31203343423397. The next prime is 31203343423433. The reversal of 31203343423402 is 20432434330213.

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, 258316023 + ... + 258436789.

It is an arithmetic number, because the mean of its divisors is an integer number (2926025072640).

Almost surely, 2^{31203343423402} is an apocalyptic number.

31203343423402 is a deficient number, since it is larger than the sum of its proper divisors (15613057738838).

31203343423402 is a wasteful number, since it uses less digits than its factorization.

31203343423402 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 151125.

The product of its (nonzero) digits is 124416, while the sum is 34.

Adding to 31203343423402 its reverse (20432434330213), we get a palindrome (51635777753615).

The spelling of 31203343423402 in words is "thirty-one trillion, two hundred three billion, three hundred forty-three million, four hundred twenty-three thousand, four hundred two".