23303221331 has 8 divisors (see below), whose sum is σ = 25097677584. Its totient is φ = 21509036640.

The previous prime is 23303221309. The next prime is 23303221367. The reversal of 23303221331 is 13312230332.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a de Polignac number, because none of the positive numbers 2^k-23303221331 is a prime.

It is a super-2 number, since 2×23303221331² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 23303221297 and 23303221306.

It is not an unprimeable number, because it can be changed into a prime (23303271331) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 132200 + ... + 253146.

It is an arithmetic number, because the mean of its divisors is an integer number (3137209698).

Almost surely, 2^23303221331 is an apocalyptic number.

23303221331 is a deficient number, since it is larger than the sum of its proper divisors (1794456253).

23303221331 is a wasteful number, since it uses less digits than its factorization.

23303221331 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 135781.

The product of its (nonzero) digits is 1944, while the sum is 23.

Adding to 23303221331 its reverse (13312230332), we get a palindrome (36615451663).

Subtracting from 23303221331 its reverse (13312230332), we obtain a palindrome (9990990999).

The spelling of 23303221331 in words is "twenty-three billion, three hundred three million, two hundred twenty-one thousand, three hundred thirty-one".