315434257 has 4 divisors (see below), whose sum is σ = 332036080. Its totient is φ = 298832436.

The previous prime is 315434159. The next prime is 315434261. The reversal of 315434257 is 752434513.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 315434257 - 2⁷ = 315434129 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (315434557) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8300883 + ... + 8300920.

It is an arithmetic number, because the mean of its divisors is an integer number (83009020).

Almost surely, 2^315434257 is an apocalyptic number.

It is an amenable number.

315434257 is a deficient number, since it is larger than the sum of its proper divisors (16601823).

315434257 is a wasteful number, since it uses less digits than its factorization.

315434257 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16601822.

The product of its digits is 50400, while the sum is 34.

The square root of 315434257 is about 17760.4689408810. The cubic root of 315434257 is about 680.7217372970.

The spelling of 315434257 in words is "three hundred fifteen million, four hundred thirty-four thousand, two hundred fifty-seven".