312131324032340 has 48 divisors (see below), whose sum is σ = 693123091282944. Its totient is φ = 117878076729600.

The previous prime is 312131324032337. The next prime is 312131324032369. The reversal of 312131324032340 is 43230423131213.

It is a junction number, because it is equal to n+sod(n) for n = 312131324032297 and 312131324032306.

It is a congruent number.

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, 6139457744 + ... + 6139508583.

It is an arithmetic number, because the mean of its divisors is an integer number (14440064401728).

Almost surely, 2^{312131324032340} is an apocalyptic number.

It is an amenable number.

312131324032340 is an abundant number, since it is smaller than the sum of its proper divisors (380991767250604).

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

312131324032340 is a wasteful number, since it uses less digits than its factorization.

312131324032340 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12278966408 (or 12278966406 counting only the distinct ones).

The product of its (nonzero) digits is 31104, while the sum is 32.

Adding to 312131324032340 its reverse (43230423131213), we get a palindrome (355361747163553).

The spelling of 312131324032340 in words is "three hundred twelve trillion, one hundred thirty-one billion, three hundred twenty-four million, thirty-two thousand, three hundred forty".