312131240431404 has 48 divisors (see below), whose sum is σ = 735003453676800. Its totient is φ = 103087040544576.

The previous prime is 312131240431397. The next prime is 312131240431411. The reversal of 312131240431404 is 404134042131213.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (312131240431397) and next prime (312131240431411).

It is a super-2 number, since 2×312131240431404² (a number of 30 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 60052089 + ... + 65042415.

It is an arithmetic number, because the mean of its divisors is an integer number (15312571951600).

Almost surely, 2^{312131240431404} is an apocalyptic number.

It is an amenable number.

312131240431404 is an abundant number, since it is smaller than the sum of its proper divisors (422872213245396).

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

312131240431404 is a wasteful number, since it uses less digits than its factorization.

312131240431404 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5038262 (or 5038260 counting only the distinct ones).

The product of its (nonzero) digits is 27648, while the sum is 33.

Adding to 312131240431404 its reverse (404134042131213), we get a palindrome (716265282562617).

The spelling of 312131240431404 in words is "three hundred twelve trillion, one hundred thirty-one billion, two hundred forty million, four hundred thirty-one thousand, four hundred four".