315995977 has 12 divisors (see below), whose sum is σ = 359315460. Its totient is φ = 277360160.

The previous prime is 315995969. The next prime is 315996007. The reversal of 315995977 is 779599513.

It can be written as a sum of positive squares in 2 ways, for example, as 163942416 + 152053561 = 12804^2 + 12331^2 .

It is not a de Polignac number, because 315995977 - 2³ = 315995969 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (315905977) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 41518 + ... + 48535.

It is an arithmetic number, because the mean of its divisors is an integer number (29942955).

Almost surely, 2^315995977 is an apocalyptic number.

It is an amenable number.

315995977 is a deficient number, since it is larger than the sum of its proper divisors (43319483).

315995977 is a wasteful number, since it uses less digits than its factorization.

315995977 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 90104 (or 90093 counting only the distinct ones).

The product of its digits is 2679075, while the sum is 55.

The square root of 315995977 is about 17776.2756785554. The cubic root of 315995977 is about 681.1255702716.

The spelling of 315995977 in words is "three hundred fifteen million, nine hundred ninety-five thousand, nine hundred seventy-seven".