23240831 has 2 divisors, whose sum is σ = 23240832. Its totient is φ = 23240830.

The previous prime is 23240797. The next prime is 23240839. The reversal of 23240831 is 13804232.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 23240831 - 2¹⁰ = 23239807 is a prime.

It is a super-2 number, since 2×23240831² = 1080272451141122, which contains 22 as substring.

It is a Sophie Germain prime.

It is a junction number, because it is equal to n+sod(n) for n = 23240797 and 23240806.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (23240839) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11620415 + 11620416.

It is an arithmetic number, because the mean of its divisors is an integer number (11620416).

Almost surely, 2^23240831 is an apocalyptic number.

23240831 is a deficient number, since it is larger than the sum of its proper divisors (1).

23240831 is an equidigital number, since it uses as much as digits as its factorization.

23240831 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1152, while the sum is 23.

The square root of 23240831 is about 4820.8745057303. The cubic root of 23240831 is about 285.3758496648.

The spelling of 23240831 in words is "twenty-three million, two hundred forty thousand, eight hundred thirty-one".