315690239 has 4 divisors (see below), whose sum is σ = 315739056. Its totient is φ = 315641424.

The previous prime is 315690233. The next prime is 315690281. The reversal of 315690239 is 932096513.

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 315690239 - 2⁴ = 315690223 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 (315690233) 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, 12899 + ... + 28244.

It is an arithmetic number, because the mean of its divisors is an integer number (78934764).

Almost surely, 2^315690239 is an apocalyptic number.

315690239 is a deficient number, since it is larger than the sum of its proper divisors (48817).

315690239 is an equidigital number, since it uses as much as digits as its factorization.

315690239 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 48816.

The product of its (nonzero) digits is 43740, while the sum is 38.

The square root of 315690239 is about 17767.6739895801. The cubic root of 315690239 is about 680.9058278457.

The spelling of 315690239 in words is "three hundred fifteen million, six hundred ninety thousand, two hundred thirty-nine".