23053991 has 2 divisors, whose sum is σ = 23053992. Its totient is φ = 23053990.

The previous prime is 23053939. The next prime is 23054021. The reversal of 23053991 is 19935032.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 23053991 - 2¹⁴ = 23037607 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 (23053691) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11526995 + 11526996.

It is an arithmetic number, because the mean of its divisors is an integer number (11526996).

Almost surely, 2^23053991 is an apocalyptic number.

23053991 is a deficient number, since it is larger than the sum of its proper divisors (1).

23053991 is an equidigital number, since it uses as much as digits as its factorization.

23053991 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 7290, while the sum is 32.

The square root of 23053991 is about 4801.4571746502. The cubic root of 23053991 is about 284.6090504987.

The spelling of 23053991 in words is "twenty-three million, fifty-three thousand, nine hundred ninety-one".