315391879 has 4 divisors (see below), whose sum is σ = 344063880. Its totient is φ = 286719880.

The previous prime is 315391877. The next prime is 315391883. The reversal of 315391879 is 978193513.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 315391879 - 2¹ = 315391877 is a prime.

It is a super-3 number, since 3×315391879³ (a number of 26 digits) contains 333 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (315391877) 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, 14335984 + ... + 14336005.

It is an arithmetic number, because the mean of its divisors is an integer number (86015970).

Almost surely, 2^315391879 is an apocalyptic number.

315391879 is a deficient number, since it is larger than the sum of its proper divisors (28672001).

315391879 is a wasteful number, since it uses less digits than its factorization.

315391879 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28672000.

The product of its digits is 204120, while the sum is 46.

The square root of 315391879 is about 17759.2758579848. The cubic root of 315391879 is about 680.6912513694.

The spelling of 315391879 in words is "three hundred fifteen million, three hundred ninety-one thousand, eight hundred seventy-nine".