315613212 has 12 divisors (see below), whose sum is σ = 736430856. Its totient is φ = 105204400.

The previous prime is 315613189. The next prime is 315613213. The reversal of 315613212 is 212316513.

It is a tau number, because it is divible by the number of its divisors (12).

It is a super-2 number, since 2×315613212² = 199223399177913888, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (315613213) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13150539 + ... + 13150562.

It is an arithmetic number, because the mean of its divisors is an integer number (61369238).

Almost surely, 2^315613212 is an apocalyptic number.

It is an amenable number.

315613212 is an abundant number, since it is smaller than the sum of its proper divisors (420817644).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

315613212 is a wasteful number, since it uses less digits than its factorization.

315613212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26301108 (or 26301106 counting only the distinct ones).

The product of its digits is 1080, while the sum is 24.

The square root of 315613212 is about 17765.5062410279. The cubic root of 315613212 is about 680.8504440201.

Adding to 315613212 its reverse (212316513), we get a palindrome (527929725).

The spelling of 315613212 in words is "three hundred fifteen million, six hundred thirteen thousand, two hundred twelve".