23901641 has 2 divisors, whose sum is σ = 23901642. Its totient is φ = 23901640.

The previous prime is 23901637. The next prime is 23901659. The reversal of 23901641 is 14610932.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 23863225 + 38416 = 4885^2 + 196^2 .

It is a cyclic number.

It is not a de Polignac number, because 23901641 - 2² = 23901637 is a prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 23901641.

It is not a weakly prime, because it can be changed into another prime (23901611) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11950820 + 11950821.

It is an arithmetic number, because the mean of its divisors is an integer number (11950821).

Almost surely, 2^23901641 is an apocalyptic number.

It is an amenable number.

23901641 is a deficient number, since it is larger than the sum of its proper divisors (1).

23901641 is an equidigital number, since it uses as much as digits as its factorization.

23901641 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1296, while the sum is 26.

The square root of 23901641 is about 4888.9304556314. The cubic root of 23901641 is about 288.0553238947.

It can be divided in two parts, 23901 and 641, that added together give a palindrome (24542).

The spelling of 23901641 in words is "twenty-three million, nine hundred one thousand, six hundred forty-one".