315601919 has 4 divisors (see below), whose sum is σ = 319596960. Its totient is φ = 311606880.

The previous prime is 315601907. The next prime is 315601931. The reversal of 315601919 is 919106513.

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

It is an interprime number because it is at equal distance from previous prime (315601907) and next prime (315601931).

It is a cyclic number.

It is not a de Polignac number, because 315601919 - 2⁴ = 315601903 is a prime.

It is a super-2 number, since 2×315601919² = 199209142552965122, which contains 22 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 (315601019) 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, 1997402 + ... + 1997559.

It is an arithmetic number, because the mean of its divisors is an integer number (79899240).

Almost surely, 2^315601919 is an apocalyptic number.

315601919 is a deficient number, since it is larger than the sum of its proper divisors (3995041).

315601919 is an equidigital number, since it uses as much as digits as its factorization.

315601919 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3995040.

The product of its (nonzero) digits is 7290, while the sum is 35.

The square root of 315601919 is about 17765.1884031665. The cubic root of 315601919 is about 680.8423233886.

The spelling of 315601919 in words is "three hundred fifteen million, six hundred one thousand, nine hundred nineteen".