23831791 has 2 divisors, whose sum is σ = 23831792. Its totient is φ = 23831790.

The previous prime is 23831771. The next prime is 23831803. The reversal of 23831791 is 19713832.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-23831791 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (23831711) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11915895 + 11915896.

It is an arithmetic number, because the mean of its divisors is an integer number (11915896).

Almost surely, 2^23831791 is an apocalyptic number.

23831791 is a deficient number, since it is larger than the sum of its proper divisors (1).

23831791 is an equidigital number, since it uses as much as digits as its factorization.

23831791 is an evil number, because the sum of its binary digits is even.

The product of its digits is 9072, while the sum is 34.

The square root of 23831791 is about 4881.7815395611. The cubic root of 23831791 is about 287.7744464377.

The spelling of 23831791 in words is "twenty-three million, eight hundred thirty-one thousand, seven hundred ninety-one".