2131204312404 has 96 divisors (see below), whose sum is σ = 5716610726400. Its totient is φ = 685816387200.

The previous prime is 2131204312261. The next prime is 2131204312411. The reversal of 2131204312404 is 4042134021312.

2131204312404 is a `hidden beast` number, since 21 + 3 + 1 + 204 + 31 + 2 + 404 = 666.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 26886229 + ... + 26965379.

It is an arithmetic number, because the mean of its divisors is an integer number (59548028400).

Almost surely, 2^{2131204312404} is an apocalyptic number.

It is an amenable number.

2131204312404 is an abundant number, since it is smaller than the sum of its proper divisors (3585406413996).

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

2131204312404 is a wasteful number, since it uses less digits than its factorization.

2131204312404 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 87790 (or 87782 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 27.

Adding to 2131204312404 its reverse (4042134021312), we get a palindrome (6173338333716).

The spelling of 2131204312404 in words is "two trillion, one hundred thirty-one billion, two hundred four million, three hundred twelve thousand, four hundred four".