2315641591 has 2 divisors, whose sum is σ = 2315641592. Its totient is φ = 2315641590.

The previous prime is 2315641567. The next prime is 2315641607. The reversal of 2315641591 is 1951465132.

2315641591 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 2315641591 - 2⁹ = 2315641079 is a prime.

It is a super-2 number, since 2×2315641591² = 10724391955938022562, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 2315641591.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2315611591) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1157820795 + 1157820796.

It is an arithmetic number, because the mean of its divisors is an integer number (1157820796).

Almost surely, 2^2315641591 is an apocalyptic number.

2315641591 is a deficient number, since it is larger than the sum of its proper divisors (1).

2315641591 is an equidigital number, since it uses as much as digits as its factorization.

2315641591 is an evil number, because the sum of its binary digits is even.

The product of its digits is 32400, while the sum is 37.

The square root of 2315641591 is about 48121.1137755559. The cubic root of 2315641591 is about 1322.9916822733.

The spelling of 2315641591 in words is "two billion, three hundred fifteen million, six hundred forty-one thousand, five hundred ninety-one".