315117132 has 96 divisors (see below), whose sum is σ = 835591680. Its totient is φ = 91553280.

The previous prime is 315117113. The next prime is 315117133. The reversal of 315117132 is 231711513.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (315117133) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1006608 + ... + 1006920.

It is an arithmetic number, because the mean of its divisors is an integer number (8704080).

Almost surely, 2^315117132 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 315117132, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (417795840).

315117132 is an abundant number, since it is smaller than the sum of its proper divisors (520474548).

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

315117132 is a wasteful number, since it uses less digits than its factorization.

315117132 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 623 (or 621 counting only the distinct ones).

The product of its digits is 630, while the sum is 24.

The square root of 315117132 is about 17751.5388628705. The cubic root of 315117132 is about 680.4935373259.

Adding to 315117132 its reverse (231711513), we get a palindrome (546828645).

The spelling of 315117132 in words is "three hundred fifteen million, one hundred seventeen thousand, one hundred thirty-two".