1512665131 has 2 divisors, whose sum is σ = 1512665132. Its totient is φ = 1512665130.

The previous prime is 1512665113. The next prime is 1512665171. The reversal of 1512665131 is 1315662151.

It is a happy number.

Together with previous prime (1512665113) it forms an Ormiston pair, because they use the same digits, order apart.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1512665131 - 2⁷ = 1512665003 is a prime.

It is a super-2 number, since 2×1512665131² = 4576311597086494322, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1512665093 and 1512665102.

It is not a weakly prime, because it can be changed into another prime (1512665101) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 756332565 + 756332566.

It is an arithmetic number, because the mean of its divisors is an integer number (756332566).

Almost surely, 2^1512665131 is an apocalyptic number.

1512665131 is a deficient number, since it is larger than the sum of its proper divisors (1).

1512665131 is an equidigital number, since it uses as much as digits as its factorization.

1512665131 is an evil number, because the sum of its binary digits is even.

The product of its digits is 5400, while the sum is 31.

The square root of 1512665131 is about 38892.9959118605. The cubic root of 1512665131 is about 1147.9269852331.

The spelling of 1512665131 in words is "one billion, five hundred twelve million, six hundred sixty-five thousand, one hundred thirty-one".