315231236 has 18 divisors (see below), whose sum is σ = 558446490. Its totient is φ = 155679040.

The previous prime is 315231233. The next prime is 315231253. The reversal of 315231236 is 632132513.

It can be written as a sum of positive squares in 3 ways, for example, as 36675136 + 278556100 = 6056^2 + 16690^2 .

It is not an unprimeable number, because it can be changed into a prime (315231233) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 334526 + ... + 335466.

It is an arithmetic number, because the mean of its divisors is an integer number (31024805).

Almost surely, 2^315231236 is an apocalyptic number.

It is an amenable number.

315231236 is a deficient number, since it is larger than the sum of its proper divisors (243215254).

315231236 is an frugal number, since it uses more digits than its factorization.

315231236 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1975 (or 1032 counting only the distinct ones).

The product of its digits is 3240, while the sum is 26.

The square root of 315231236 is about 17754.7524905305. The cubic root of 315231236 is about 680.5756630463.

Adding to 315231236 its reverse (632132513), we get a palindrome (947363749).

The spelling of 315231236 in words is "three hundred fifteen million, two hundred thirty-one thousand, two hundred thirty-six".