23233621 has 2 divisors, whose sum is σ = 23233622. Its totient is φ = 23233620.

The previous prime is 23233603. The next prime is 23233649. The reversal of 23233621 is 12633232.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 17892900 + 5340721 = 4230^2 + 2311^2 .

It is a cyclic number.

It is not a de Polignac number, because 23233621 - 2⁹ = 23233109 is a prime.

It is a super-2 number, since 2×23233621² = 1079602289543282, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 23233592 and 23233601.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (23233681) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11616810 + 11616811.

It is an arithmetic number, because the mean of its divisors is an integer number (11616811).

Almost surely, 2^23233621 is an apocalyptic number.

It is an amenable number.

23233621 is a deficient number, since it is larger than the sum of its proper divisors (1).

23233621 is an equidigital number, since it uses as much as digits as its factorization.

23233621 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1296, while the sum is 22.

The square root of 23233621 is about 4820.1266580869. The cubic root of 23233621 is about 285.3463359082.

Adding to 23233621 its reverse (12633232), we get a palindrome (35866853).

The spelling of 23233621 in words is "twenty-three million, two hundred thirty-three thousand, six hundred twenty-one".