23641391 has 2 divisors, whose sum is σ = 23641392. Its totient is φ = 23641390.

The previous prime is 23641363. The next prime is 23641393. The reversal of 23641391 is 19314632.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-23641391 is a prime.

Together with 23641393, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (23641393) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11820695 + 11820696.

It is an arithmetic number, because the mean of its divisors is an integer number (11820696).

Almost surely, 2^23641391 is an apocalyptic number.

23641391 is a deficient number, since it is larger than the sum of its proper divisors (1).

23641391 is an equidigital number, since it uses as much as digits as its factorization.

23641391 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3888, while the sum is 29.

The square root of 23641391 is about 4862.2413555890. The cubic root of 23641391 is about 287.0060215566.

The spelling of 23641391 in words is "twenty-three million, six hundred forty-one thousand, three hundred ninety-one".