23421313 has 2 divisors, whose sum is σ = 23421314. Its totient is φ = 23421312.

The previous prime is 23421311. The next prime is 23421317. The reversal of 23421313 is 31312432.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 14379264 + 9042049 = 3792^2 + 3007^2 .

It is a cyclic number.

It is not a de Polignac number, because 23421313 - 2¹ = 23421311 is a prime.

Together with 23421311, it forms a pair of twin primes.

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, 11710656 + 11710657.

It is an arithmetic number, because the mean of its divisors is an integer number (11710657).

Almost surely, 2^23421313 is an apocalyptic number.

It is an amenable number.

23421313 is a deficient number, since it is larger than the sum of its proper divisors (1).

23421313 is an equidigital number, since it uses as much as digits as its factorization.

23421313 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 23421313 is about 4839.5571078354. The cubic root of 23421313 is about 286.1126628362.

Adding to 23421313 its reverse (31312432), we get a palindrome (54733745).

It can be divided in two parts, 2342 and 1313, that added together give a triangular number (3655 = T₈₅).

The spelling of 23421313 in words is "twenty-three million, four hundred twenty-one thousand, three hundred thirteen".