23240291 has 2 divisors, whose sum is σ = 23240292. Its totient is φ = 23240290.

The previous prime is 23240279. The next prime is 23240381. The reversal of 23240291 is 19204232.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 23240291 - 2⁶ = 23240227 is a prime.

It is a super-2 number, since 2×23240291² = 1080222251529362, which contains 22 as substring.

It is a Sophie Germain prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (23240251) 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, 11620145 + 11620146.

It is an arithmetic number, because the mean of its divisors is an integer number (11620146).

Almost surely, 2^23240291 is an apocalyptic number.

23240291 is a deficient number, since it is larger than the sum of its proper divisors (1).

23240291 is an equidigital number, since it uses as much as digits as its factorization.

23240291 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 864, while the sum is 23.

The square root of 23240291 is about 4820.8184989688. The cubic root of 23240291 is about 285.3736394146.

The spelling of 23240291 in words is "twenty-three million, two hundred forty thousand, two hundred ninety-one".