315142879 has 4 divisors (see below), whose sum is σ = 315184176. Its totient is φ = 315101584.

The previous prime is 315142847. The next prime is 315142907. The reversal of 315142879 is 978241513.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 315142879 - 2⁵ = 315142847 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (315140879) 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, 5494 + ... + 25699.

It is an arithmetic number, because the mean of its divisors is an integer number (78796044).

Almost surely, 2^315142879 is an apocalyptic number.

315142879 is a deficient number, since it is larger than the sum of its proper divisors (41297).

315142879 is a wasteful number, since it uses less digits than its factorization.

315142879 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41296.

The product of its digits is 60480, while the sum is 40.

The square root of 315142879 is about 17752.2640527906. The cubic root of 315142879 is about 680.5120703180.

The spelling of 315142879 in words is "three hundred fifteen million, one hundred forty-two thousand, eight hundred seventy-nine".