23220320231 has 4 divisors (see below), whose sum is σ = 23224365000. Its totient is φ = 23216275464.

The previous prime is 23220320203. The next prime is 23220320237. The reversal of 23220320231 is 13202302232.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 23220320231 - 2³⁰ = 22146578407 is a prime.

It is a super-2 number, since 2×23220320231² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23220320237) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2013761 + ... + 2025258.

It is an arithmetic number, because the mean of its divisors is an integer number (5806091250).

Almost surely, 2^23220320231 is an apocalyptic number.

23220320231 is a deficient number, since it is larger than the sum of its proper divisors (4044769).

23220320231 is an equidigital number, since it uses as much as digits as its factorization.

23220320231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4044768.

The product of its (nonzero) digits is 864, while the sum is 20.

Adding to 23220320231 its reverse (13202302232), we get a palindrome (36422622463).

The spelling of 23220320231 in words is "twenty-three billion, two hundred twenty million, three hundred twenty thousand, two hundred thirty-one".