2316537991 has 2 divisors, whose sum is σ = 2316537992. Its totient is φ = 2316537990.

The previous prime is 2316537953. The next prime is 2316538033. The reversal of 2316537991 is 1997356132.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2316537991 - 2⁷ = 2316537863 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2316537901) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1158268995 + 1158268996.

It is an arithmetic number, because the mean of its divisors is an integer number (1158268996).

Almost surely, 2^2316537991 is an apocalyptic number.

2316537991 is a deficient number, since it is larger than the sum of its proper divisors (1).

2316537991 is an equidigital number, since it uses as much as digits as its factorization.

2316537991 is an evil number, because the sum of its binary digits is even.

The product of its digits is 306180, while the sum is 46.

The square root of 2316537991 is about 48130.4268732369. The cubic root of 2316537991 is about 1323.1623731601.

The spelling of 2316537991 in words is "two billion, three hundred sixteen million, five hundred thirty-seven thousand, nine hundred ninety-one".