312316240 has 40 divisors (see below), whose sum is σ = 733343688. Its totient is φ = 123686400.

The previous prime is 312316237. The next prime is 312316259. The reversal of 312316240 is 42613213.

It can be written as a sum of positive squares in 4 ways, for example, as 40857664 + 271458576 = 6392^2 + 16476^2 .

It is a tau number, because it is divible by the number of its divisors (40).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11247 + ... + 27406.

Almost surely, 2^312316240 is an apocalyptic number.

It is an amenable number.

312316240 is an abundant number, since it is smaller than the sum of its proper divisors (421027448).

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

312316240 is a wasteful number, since it uses less digits than its factorization.

312316240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38767 (or 38761 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 22.

The square root of 312316240 is about 17672.4712476778. The cubic root of 312316240 is about 678.4713643664.

Adding to 312316240 its reverse (42613213), we get a palindrome (354929453).

The spelling of 312316240 in words is "three hundred twelve million, three hundred sixteen thousand, two hundred forty".