513131312 has 10 divisors (see below), whose sum is σ = 994191948. Its totient is φ = 256565648.

The previous prime is 513131303. The next prime is 513131317. The reversal of 513131312 is 213131315.

It is not an unprimeable number, because it can be changed into a prime (513131317) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 16035338 + ... + 16035369.

Almost surely, 2^513131312 is an apocalyptic number.

It is an amenable number.

513131312 is a deficient number, since it is larger than the sum of its proper divisors (481060636).

513131312 is a wasteful number, since it uses less digits than its factorization.

513131312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32070715 (or 32070709 counting only the distinct ones).

The product of its digits is 270, while the sum is 20.

The square root of 513131312 is about 22652.4019035510. The cubic root of 513131312 is about 800.5887915493.

Adding to 513131312 its reverse (213131315), we get a palindrome (726262627).

It can be divided in two parts, 51313 and 1312, that added together give a palindrome (52625).

The spelling of 513131312 in words is "five hundred thirteen million, one hundred thirty-one thousand, three hundred twelve".