513125131 has 2 divisors, whose sum is σ = 513125132. Its totient is φ = 513125130.

The previous prime is 513125099. The next prime is 513125167. The reversal of 513125131 is 131521315.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 513125131 - 2⁵ = 513125099 is a prime.

It is a super-2 number, since 2×513125131² = 526594800127534322, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (513125231) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 256562565 + 256562566.

It is an arithmetic number, because the mean of its divisors is an integer number (256562566).

Almost surely, 2^513125131 is an apocalyptic number.

513125131 is a deficient number, since it is larger than the sum of its proper divisors (1).

513125131 is an equidigital number, since it uses as much as digits as its factorization.

513125131 is an evil number, because the sum of its binary digits is even.

The product of its digits is 450, while the sum is 22.

The square root of 513125131 is about 22652.2654716918. The cubic root of 513125131 is about 800.5855769991.

Adding to 513125131 its reverse (131521315), we get a palindrome (644646446).

The spelling of 513125131 in words is "five hundred thirteen million, one hundred twenty-five thousand, one hundred thirty-one".