31231203120204 has 12 divisors (see below), whose sum is σ = 72872807280504. Its totient is φ = 10410401040064.

The previous prime is 31231203120163. The next prime is 31231203120209. The reversal of 31231203120204 is 40202130213213.

It is a tau number, because it is divible by the number of its divisors (12).

It is not an unprimeable number, because it can be changed into a prime (31231203120209) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1301300129997 + ... + 1301300130020.

It is an arithmetic number, because the mean of its divisors is an integer number (6072733940042).

Almost surely, 2^{31231203120204} is an apocalyptic number.

It is an amenable number.

31231203120204 is an abundant number, since it is smaller than the sum of its proper divisors (41641604160300).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

31231203120204 is a wasteful number, since it uses less digits than its factorization.

31231203120204 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2602600260024 (or 2602600260022 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 24.

Adding to 31231203120204 its reverse (40202130213213), we get a palindrome (71433333333417).

The spelling of 31231203120204 in words is "thirty-one trillion, two hundred thirty-one billion, two hundred three million, one hundred twenty thousand, two hundred four".