9612897131 has 2 divisors, whose sum is σ = 9612897132. Its totient is φ = 9612897130.

The previous prime is 9612897109. The next prime is 9612897137. The reversal of 9612897131 is 1317982169.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-9612897131 is a prime.

It is a super-2 number, since 2×9612897131² (a number of 21 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (9612897137) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4806448565 + 4806448566.

It is an arithmetic number, because the mean of its divisors is an integer number (4806448566).

Almost surely, 2^9612897131 is an apocalyptic number.

9612897131 is a deficient number, since it is larger than the sum of its proper divisors (1).

9612897131 is an equidigital number, since it uses as much as digits as its factorization.

9612897131 is an evil number, because the sum of its binary digits is even.

The product of its digits is 163296, while the sum is 47.

The square root of 9612897131 is about 98045.3830172538. The cubic root of 9612897131 is about 2126.2684657200.

The spelling of 9612897131 in words is "nine billion, six hundred twelve million, eight hundred ninety-seven thousand, one hundred thirty-one".