23433312421 has 2 divisors, whose sum is σ = 23433312422. Its totient is φ = 23433312420.

The previous prime is 23433312401. The next prime is 23433312467. The reversal of 23433312421 is 12421333432.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 23392173025 + 41139396 = 152945^2 + 6414^2 .

It is a cyclic number.

It is not a de Polignac number, because 23433312421 - 2²⁹ = 22896441509 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 23433312421.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (23433312401) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11716656210 + 11716656211.

It is an arithmetic number, because the mean of its divisors is an integer number (11716656211).

Almost surely, 2^23433312421 is an apocalyptic number.

It is an amenable number.

23433312421 is a deficient number, since it is larger than the sum of its proper divisors (1).

23433312421 is an equidigital number, since it uses as much as digits as its factorization.

23433312421 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 10368, while the sum is 28.

Adding to 23433312421 its reverse (12421333432), we get a palindrome (35854645853).

The spelling of 23433312421 in words is "twenty-three billion, four hundred thirty-three million, three hundred twelve thousand, four hundred twenty-one".