31231420204 has 6 divisors (see below), whose sum is σ = 54654985364. Its totient is φ = 15615710100.

The previous prime is 31231420139. The next prime is 31231420211. The reversal of 31231420204 is 40202413213.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3903927522 + ... + 3903927529.

Almost surely, 2^31231420204 is an apocalyptic number.

It is an amenable number.

31231420204 is a deficient number, since it is larger than the sum of its proper divisors (23423565160).

31231420204 is a wasteful number, since it uses less digits than its factorization.

31231420204 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7807855055 (or 7807855053 counting only the distinct ones).

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

Adding to 31231420204 its reverse (40202413213), we get a palindrome (71433833417).

The spelling of 31231420204 in words is "thirty-one billion, two hundred thirty-one million, four hundred twenty thousand, two hundred four".