312132320 has 24 divisors (see below), whose sum is σ = 737412984. Its totient is φ = 124852864.

The previous prime is 312132299. The next prime is 312132341. The reversal of 312132320 is 23231213.

It is an interprime number because it is at equal distance from previous prime (312132299) and next prime (312132341).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 975254 + ... + 975573.

It is an arithmetic number, because the mean of its divisors is an integer number (30725541).

Almost surely, 2^312132320 is an apocalyptic number.

It is an amenable number.

312132320 is an abundant number, since it is smaller than the sum of its proper divisors (425280664).

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

312132320 is a wasteful number, since it uses less digits than its factorization.

312132320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1950842 (or 1950834 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 17.

The square root of 312132320 is about 17667.2669080421. The cubic root of 312132320 is about 678.3381564827.

Adding to 312132320 its reverse (23231213), we get a palindrome (335363533).

It can be divided in two parts, 31213 and 2320, that added together give a palindrome (33533).

The spelling of 312132320 in words is "three hundred twelve million, one hundred thirty-two thousand, three hundred twenty".