513131084 has 12 divisors (see below), whose sum is σ = 898152024. Its totient is φ = 256516224.

The previous prime is 513131053. The next prime is 513131131. The reversal of 513131084 is 480131315.

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, 21227 + ... + 38429.

It is an arithmetic number, because the mean of its divisors is an integer number (74846002).

Almost surely, 2^513131084 is an apocalyptic number.

It is an amenable number.

513131084 is a deficient number, since it is larger than the sum of its proper divisors (385020940).

513131084 is a wasteful number, since it uses less digits than its factorization.

513131084 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24664 (or 24662 counting only the distinct ones).

The product of its (nonzero) digits is 1440, while the sum is 26.

The square root of 513131084 is about 22652.3968709715. The cubic root of 513131084 is about 800.5886729739.

Adding to 513131084 its reverse (480131315), we get a palindrome (993262399).

The spelling of 513131084 in words is "five hundred thirteen million, one hundred thirty-one thousand, eighty-four".