23291039 has 2 divisors, whose sum is σ = 23291040. Its totient is φ = 23291038.

The previous prime is 23291029. The next prime is 23291057. The reversal of 23291039 is 93019232.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 23291039 - 2⁸ = 23290783 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (23291029) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11645519 + 11645520.

It is an arithmetic number, because the mean of its divisors is an integer number (11645520).

Almost surely, 2^23291039 is an apocalyptic number.

23291039 is a deficient number, since it is larger than the sum of its proper divisors (1).

23291039 is an equidigital number, since it uses as much as digits as its factorization.

23291039 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2916, while the sum is 29.

The square root of 23291039 is about 4826.0790503265. The cubic root of 23291039 is about 285.5812044153.

The spelling of 23291039 in words is "twenty-three million, two hundred ninety-one thousand, thirty-nine".