315831132 has 36 divisors (see below), whose sum is σ = 799697080. Its totient is φ = 105099552.

The previous prime is 315831121. The next prime is 315831133. The reversal of 315831132 is 231138513.

315831132 is a `hidden beast` number, since 315 + 8 + 311 + 32 = 666.

315831132 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (36).

It is a junction number, because it is equal to n+sod(n) for n = 315831096 and 315831105.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (315831133) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 15198 + ... + 29370.

Almost surely, 2^315831132 is an apocalyptic number.

It is an amenable number.

315831132 is an abundant number, since it is smaller than the sum of its proper divisors (483865948).

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

315831132 is a wasteful number, since it uses less digits than its factorization.

315831132 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14802 (or 14797 counting only the distinct ones).

The product of its digits is 2160, while the sum is 27.

The square root of 315831132 is about 17771.6384163082. The cubic root of 315831132 is about 681.0071091911.

Adding to 315831132 its reverse (231138513), we get a palindrome (546969645).

The spelling of 315831132 in words is "three hundred fifteen million, eight hundred thirty-one thousand, one hundred thirty-two".