315140644 has 24 divisors (see below), whose sum is σ = 678765248. Its totient is φ = 124670880.

The previous prime is 315140621. The next prime is 315140647. The reversal of 315140644 is 446041513.

It is a Harshad number since it is a multiple of its sum of digits (28).

It is not an unprimeable number, because it can be changed into a prime (315140647) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 432522 + ... + 433249.

Almost surely, 2^315140644 is an apocalyptic number.

It is an amenable number.

315140644 is an abundant number, since it is smaller than the sum of its proper divisors (363624604).

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

315140644 is a wasteful number, since it uses less digits than its factorization.

315140644 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 865795 (or 865793 counting only the distinct ones).

The product of its (nonzero) digits is 5760, while the sum is 28.

The square root of 315140644 is about 17752.2011029619. The cubic root of 315140644 is about 680.5104615788.

The spelling of 315140644 in words is "three hundred fifteen million, one hundred forty thousand, six hundred forty-four".