23303431321 has 4 divisors (see below), whose sum is σ = 24055154944. Its totient is φ = 22551707700.

The previous prime is 23303431303. The next prime is 23303431337. The reversal of 23303431321 is 12313430332.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 23303431321 - 2¹¹ = 23303429273 is a prime.

It is a super-2 number, since 2×23303431321² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (23303434321) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 375861765 + ... + 375861826.

It is an arithmetic number, because the mean of its divisors is an integer number (6013788736).

Almost surely, 2^23303431321 is an apocalyptic number.

It is an amenable number.

23303431321 is a deficient number, since it is larger than the sum of its proper divisors (751723623).

23303431321 is an equidigital number, since it uses as much as digits as its factorization.

23303431321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 751723622.

The product of its (nonzero) digits is 3888, while the sum is 25.

Adding to 23303431321 its reverse (12313430332), we get a palindrome (35616861653).

The spelling of 23303431321 in words is "twenty-three billion, three hundred three million, four hundred thirty-one thousand, three hundred twenty-one".