23421312389 has 2 divisors, whose sum is σ = 23421312390. Its totient is φ = 23421312388.

The previous prime is 23421312349. The next prime is 23421312419. The reversal of 23421312389 is 98321312432.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 22856299489 + 565012900 = 151183^2 + 23770^2 .

It is a cyclic number.

It is not a de Polignac number, because 23421312389 - 2²⁸ = 23152876933 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (23421312349) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11710656194 + 11710656195.

It is an arithmetic number, because the mean of its divisors is an integer number (11710656195).

Almost surely, 2^23421312389 is an apocalyptic number.

It is an amenable number.

23421312389 is a deficient number, since it is larger than the sum of its proper divisors (1).

23421312389 is an equidigital number, since it uses as much as digits as its factorization.

23421312389 is an evil number, because the sum of its binary digits is even.

The product of its digits is 62208, while the sum is 38.

The spelling of 23421312389 in words is "twenty-three billion, four hundred twenty-one million, three hundred twelve thousand, three hundred eighty-nine".