315242744 has 8 divisors (see below), whose sum is σ = 591080160. Its totient is φ = 157621368.

The previous prime is 315242729. The next prime is 315242773. The reversal of 315242744 is 447242513.

It is a tau number, because it is divible by the number of its divisors (8).

It is a self number, because there is not a number n which added to its sum of digits gives 315242744.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 19702664 + ... + 19702679.

It is an arithmetic number, because the mean of its divisors is an integer number (73885020).

Almost surely, 2^315242744 is an apocalyptic number.

It is an amenable number.

315242744 is a deficient number, since it is larger than the sum of its proper divisors (275837416).

315242744 is a wasteful number, since it uses less digits than its factorization.

315242744 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39405349 (or 39405345 counting only the distinct ones).

The product of its digits is 26880, while the sum is 32.

The square root of 315242744 is about 17755.0765698152. The cubic root of 315242744 is about 680.5839447652.

The spelling of 315242744 in words is "three hundred fifteen million, two hundred forty-two thousand, seven hundred forty-four".