513125312 has 28 divisors (see below), whose sum is σ = 1163695920. Its totient is φ = 219910656.

The previous prime is 513125269. The next prime is 513125323. The reversal of 513125312 is 213521315.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (28).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 572237 + ... + 573132.

Almost surely, 2^513125312 is an apocalyptic number.

It is an amenable number.

513125312 is an abundant number, since it is smaller than the sum of its proper divisors (650570608).

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

513125312 is a wasteful number, since it uses less digits than its factorization.

513125312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1145388 (or 1145378 counting only the distinct ones).

The product of its digits is 900, while the sum is 23.

The square root of 513125312 is about 22652.2694668768. The cubic root of 513125312 is about 800.5856711320.

Adding to 513125312 its reverse (213521315), we get a palindrome (726646627).

The spelling of 513125312 in words is "five hundred thirteen million, one hundred twenty-five thousand, three hundred twelve".