2323431991 has 2 divisors, whose sum is σ = 2323431992. Its totient is φ = 2323431990.

The previous prime is 2323431907. The next prime is 2323432049. The reversal of 2323431991 is 1991343232.

2323431991 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 2323431991 - 2⁹ = 2323431479 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 2323431991.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2323434991) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1161715995 + 1161715996.

It is an arithmetic number, because the mean of its divisors is an integer number (1161715996).

Almost surely, 2^2323431991 is an apocalyptic number.

2323431991 is a deficient number, since it is larger than the sum of its proper divisors (1).

2323431991 is an equidigital number, since it uses as much as digits as its factorization.

2323431991 is an evil number, because the sum of its binary digits is even.

The product of its digits is 34992, while the sum is 37.

The square root of 2323431991 is about 48201.9915667392. The cubic root of 2323431991 is about 1324.4736470644.

It can be divided in two parts, 23234 and 31991, that added together give a square (55225 = 235²).

The spelling of 2323431991 in words is "two billion, three hundred twenty-three million, four hundred thirty-one thousand, nine hundred ninety-one".