23411621 has 2 divisors, whose sum is σ = 23411622. Its totient is φ = 23411620.

The previous prime is 23411599. The next prime is 23411623. The reversal of 23411621 is 12611432.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 20349121 + 3062500 = 4511^2 + 1750^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-23411621 is a prime.

It is a Sophie Germain prime.

Together with 23411623, it forms a pair of twin primes.

It is a Chen prime.

It is a Curzon number.

It is equal to p_1472501 and since 23411621 and 1472501 have the same sum of digits, it is a Honaker prime.

It is a junction number, because it is equal to n+sod(n) for n = 23411593 and 23411602.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (23411623) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11705810 + 11705811.

It is an arithmetic number, because the mean of its divisors is an integer number (11705811).

Almost surely, 2^23411621 is an apocalyptic number.

It is an amenable number.

23411621 is a deficient number, since it is larger than the sum of its proper divisors (1).

23411621 is an equidigital number, since it uses as much as digits as its factorization.

23411621 is an evil number, because the sum of its binary digits is even.

The product of its digits is 288, while the sum is 20.

The square root of 23411621 is about 4838.5556729255. Note that the first 3 decimals coincide. The cubic root of 23411621 is about 286.0731918564.

The spelling of 23411621 in words is "twenty-three million, four hundred eleven thousand, six hundred twenty-one".