315105213 has 16 divisors (see below), whose sum is σ = 445233600. Its totient is φ = 197877120.

The previous prime is 315105191. The next prime is 315105257. The reversal of 315105213 is 312501513.

It is not a de Polignac number, because 315105213 - 2⁵ = 315105181 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 315105213.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (315105293) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 40603 + ... + 47736.

It is an arithmetic number, because the mean of its divisors is an integer number (27827100).

Almost surely, 2^315105213 is an apocalyptic number.

It is an amenable number.

315105213 is a deficient number, since it is larger than the sum of its proper divisors (130128387).

315105213 is a wasteful number, since it uses less digits than its factorization.

315105213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 88412.

The product of its (nonzero) digits is 450, while the sum is 21.

The square root of 315105213 is about 17751.2031423225. The cubic root of 315105213 is about 680.4849575483.

Adding to 315105213 its reverse (312501513), we get a palindrome (627606726).

The spelling of 315105213 in words is "three hundred fifteen million, one hundred five thousand, two hundred thirteen".