315654891 has 4 divisors (see below), whose sum is σ = 420873192. Its totient is φ = 210436592.

The previous prime is 315654851. The next prime is 315654901. The reversal of 315654891 is 198456513.

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 315654891 - 2¹⁰ = 315653867 is a prime.

It is not an unprimeable number, because it can be changed into a prime (315654851) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 52609146 + ... + 52609151.

It is an arithmetic number, because the mean of its divisors is an integer number (105218298).

Almost surely, 2^315654891 is an apocalyptic number.

315654891 is a deficient number, since it is larger than the sum of its proper divisors (105218301).

315654891 is a wasteful number, since it uses less digits than its factorization.

315654891 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 105218300.

The product of its digits is 129600, while the sum is 42.

The square root of 315654891 is about 17766.6792338917. The cubic root of 315654891 is about 680.8804131041.

The spelling of 315654891 in words is "three hundred fifteen million, six hundred fifty-four thousand, eight hundred ninety-one".