23421331 has 2 divisors, whose sum is σ = 23421332. Its totient is φ = 23421330.

The previous prime is 23421323. The next prime is 23421341. The reversal of 23421331 is 13312432.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 23421331 - 2³ = 23421323 is a prime.

It is a super-2 number, since 2×23421331² = 1097117491623122, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 23421299 and 23421308.

It is not a weakly prime, because it can be changed into another prime (23421311) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11710665 + 11710666.

It is an arithmetic number, because the mean of its divisors is an integer number (11710666).

Almost surely, 2^23421331 is an apocalyptic number.

23421331 is a deficient number, since it is larger than the sum of its proper divisors (1).

23421331 is an equidigital number, since it uses as much as digits as its factorization.

23421331 is an evil number, because the sum of its binary digits is even.

The product of its digits is 432, while the sum is 19.

The square root of 23421331 is about 4839.5589675093. The cubic root of 23421331 is about 286.1127361316.

Adding to 23421331 its reverse (13312432), we get a palindrome (36733763).

The spelling of 23421331 in words is "twenty-three million, four hundred twenty-one thousand, three hundred thirty-one".