23221131231 has 8 divisors (see below), whose sum is σ = 31205300224. Its totient is φ = 15358858200.

The previous prime is 23221131229. The next prime is 23221131233. The reversal of 23221131231 is 13213112232.

It is an interprime number because it is at equal distance from previous prime (23221131229) and next prime (23221131233).

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

It is not a de Polignac number, because 23221131231 - 2¹ = 23221131229 is a prime.

It is a super-2 number, since 2×23221131231² (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 = 23221131198 and 23221131207.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23221131233) 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, 30473545 + ... + 30474306.

It is an arithmetic number, because the mean of its divisors is an integer number (3900662528).

Almost surely, 2^23221131231 is an apocalyptic number.

23221131231 is a deficient number, since it is larger than the sum of its proper divisors (7984168993).

23221131231 is a wasteful number, since it uses less digits than its factorization.

23221131231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 60947981.

The product of its digits is 432, while the sum is 21.

Adding to 23221131231 its reverse (13213112232), we get a palindrome (36434243463).

The spelling of 23221131231 in words is "twenty-three billion, two hundred twenty-one million, one hundred thirty-one thousand, two hundred thirty-one".