315321051 has 4 divisors (see below), whose sum is σ = 420428072. Its totient is φ = 210214032.

The previous prime is 315321047. The next prime is 315321079. The reversal of 315321051 is 150123513.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 315321051 - 2² = 315321047 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (315329051) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 52553506 + ... + 52553511.

It is an arithmetic number, because the mean of its divisors is an integer number (105107018).

Almost surely, 2^315321051 is an apocalyptic number.

315321051 is a deficient number, since it is larger than the sum of its proper divisors (105107021).

315321051 is a wasteful number, since it uses less digits than its factorization.

315321051 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 105107020.

The product of its (nonzero) digits is 450, while the sum is 21.

The square root of 315321051 is about 17757.2816331780. The cubic root of 315321051 is about 680.6402929558.

Adding to 315321051 its reverse (150123513), we get a palindrome (465444564).

The spelling of 315321051 in words is "three hundred fifteen million, three hundred twenty-one thousand, fifty-one".