2391659131 has 2 divisors, whose sum is σ = 2391659132. Its totient is φ = 2391659130.

The previous prime is 2391659113. The next prime is 2391659141. The reversal of 2391659131 is 1319561932.

Together with previous prime (2391659113) it forms an Ormiston pair, because they use the same digits, order apart.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 2391659131 - 2⁷ = 2391659003 is a prime.

It is a super-2 number, since 2×2391659131² = 11440066797791350322, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (2391659141) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1195829565 + 1195829566.

It is an arithmetic number, because the mean of its divisors is an integer number (1195829566).

Almost surely, 2^2391659131 is an apocalyptic number.

2391659131 is a deficient number, since it is larger than the sum of its proper divisors (1).

2391659131 is an equidigital number, since it uses as much as digits as its factorization.

2391659131 is an evil number, because the sum of its binary digits is even.

The product of its digits is 43740, while the sum is 40.

The square root of 2391659131 is about 48904.5921258935. The cubic root of 2391659131 is about 1337.3130853133.

The spelling of 2391659131 in words is "two billion, three hundred ninety-one million, six hundred fifty-nine thousand, one hundred thirty-one".