2315766391 has 4 divisors (see below), whose sum is σ = 2323309912. Its totient is φ = 2308222872.

The previous prime is 2315766389. The next prime is 2315766413. The reversal of 2315766391 is 1936675132.

2315766391 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 2315766391 - 2¹ = 2315766389 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2315766311) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3771300 + ... + 3771913.

It is an arithmetic number, because the mean of its divisors is an integer number (580827478).

Almost surely, 2^2315766391 is an apocalyptic number.

2315766391 is a deficient number, since it is larger than the sum of its proper divisors (7543521).

2315766391 is an equidigital number, since it uses as much as digits as its factorization.

2315766391 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7543520.

The product of its digits is 204120, while the sum is 43.

The square root of 2315766391 is about 48122.4104861758. The cubic root of 2315766391 is about 1323.0154491056.

The spelling of 2315766391 in words is "two billion, three hundred fifteen million, seven hundred sixty-six thousand, three hundred ninety-one".