315122691 has 8 divisors (see below), whose sum is σ = 452483920. Its totient is φ = 193921632.

The previous prime is 315122663. The next prime is 315122699. The reversal of 315122691 is 196221513.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 315122691 - 2⁶ = 315122627 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (315122699) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4039996 + ... + 4040073.

It is an arithmetic number, because the mean of its divisors is an integer number (56560490).

Almost surely, 2^315122691 is an apocalyptic number.

315122691 is a deficient number, since it is larger than the sum of its proper divisors (137361229).

315122691 is a wasteful number, since it uses less digits than its factorization.

315122691 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8080085.

The product of its digits is 3240, while the sum is 30.

The square root of 315122691 is about 17751.6954401544. The cubic root of 315122691 is about 680.4975388446.

The spelling of 315122691 in words is "three hundred fifteen million, one hundred twenty-two thousand, six hundred ninety-one".