23220402231 has 8 divisors (see below), whose sum is σ = 33342116080. Its totient is φ = 14289478272.

The previous prime is 23220402229. The next prime is 23220402239. The reversal of 23220402231 is 13220402232.

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

It is not a de Polignac number, because 23220402231 - 2¹ = 23220402229 is a prime.

It is a super-2 number, since 2×23220402231² (a number of 22 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 23220402198 and 23220402207.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23220402239) 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, 297697426 + ... + 297697503.

It is an arithmetic number, because the mean of its divisors is an integer number (4167764510).

Almost surely, 2^23220402231 is an apocalyptic number.

23220402231 is a deficient number, since it is larger than the sum of its proper divisors (10121713849).

23220402231 is a wasteful number, since it uses less digits than its factorization.

23220402231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 595394945.

The product of its (nonzero) digits is 1152, while the sum is 21.

Adding to 23220402231 its reverse (13220402232), we get a palindrome (36440804463).

Subtracting from 23220402231 its reverse (13220402232), we obtain a palindrome (9999999999).

The spelling of 23220402231 in words is "twenty-three billion, two hundred twenty million, four hundred two thousand, two hundred thirty-one".