315133211 has 4 divisors (see below), whose sum is σ = 316452000. Its totient is φ = 313814424.

The previous prime is 315133193. The next prime is 315133213. The reversal of 315133211 is 112331513.

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 315133211 - 2²² = 310938907 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (315133213) 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, 659036 + ... + 659513.

It is an arithmetic number, because the mean of its divisors is an integer number (79113000).

Almost surely, 2^315133211 is an apocalyptic number.

315133211 is a deficient number, since it is larger than the sum of its proper divisors (1318789).

315133211 is a wasteful number, since it uses less digits than its factorization.

315133211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1318788.

The product of its digits is 270, while the sum is 20.

The square root of 315133211 is about 17751.9917474068. The cubic root of 315133211 is about 680.5051112967.

Adding to 315133211 its reverse (112331513), we get a palindrome (427464724).

The spelling of 315133211 in words is "three hundred fifteen million, one hundred thirty-three thousand, two hundred eleven".