315640244 has 12 divisors (see below), whose sum is σ = 553228704. Its totient is φ = 157574904.

The previous prime is 315640211. The next prime is 315640267. The reversal of 315640244 is 442046513.

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, 58394 + ... + 63569.

It is an arithmetic number, because the mean of its divisors is an integer number (46102392).

Almost surely, 2^315640244 is an apocalyptic number.

It is an amenable number.

315640244 is a deficient number, since it is larger than the sum of its proper divisors (237588460).

315640244 is a wasteful number, since it uses less digits than its factorization.

315640244 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 122614 (or 122612 counting only the distinct ones).

The product of its (nonzero) digits is 11520, while the sum is 29.

The square root of 315640244 is about 17766.2670248986. The cubic root of 315640244 is about 680.8698815500.

Adding to 315640244 its reverse (442046513), we get a palindrome (757686757).

The spelling of 315640244 in words is "three hundred fifteen million, six hundred forty thousand, two hundred forty-four".