315009805 has 16 divisors (see below), whose sum is σ = 415533888. Its totient is φ = 227344000.

The previous prime is 315009781. The next prime is 315009853. The reversal of 315009805 is 508900513.

It is not a de Polignac number, because 315009805 - 2¹³ = 315001613 is a prime.

It is a super-2 number, since 2×315009805² = 198462354492276050, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 14656 + ... + 29065.

It is an arithmetic number, because the mean of its divisors is an integer number (25970868).

Almost surely, 2^315009805 is an apocalyptic number.

It is an amenable number.

315009805 is a deficient number, since it is larger than the sum of its proper divisors (100524083).

315009805 is a wasteful number, since it uses less digits than its factorization.

315009805 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43868.

The product of its (nonzero) digits is 5400, while the sum is 31.

The square root of 315009805 is about 17748.5155717316. The cubic root of 315009805 is about 680.4162712177.

The spelling of 315009805 in words is "three hundred fifteen million, nine thousand, eight hundred five".