22031023231 has 24 divisors (see below), whose sum is σ = 27147812256. Its totient is φ = 17764830720.

The previous prime is 22031023229. The next prime is 22031023237. The reversal of 22031023231 is 13232013022.

It is not a de Polignac number, because 22031023231 - 2¹ = 22031023229 is a prime.

It is a super-2 number, since 2×22031023231² (a number of 21 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 = 22031023199 and 22031023208.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22031023237) 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 23 ways as a sum of consecutive naturals, for example, 2400291 + ... + 2409451.

It is an arithmetic number, because the mean of its divisors is an integer number (1131158844).

Almost surely, 2^22031023231 is an apocalyptic number.

22031023231 is a deficient number, since it is larger than the sum of its proper divisors (5116789025).

22031023231 is a wasteful number, since it uses less digits than its factorization.

22031023231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12079 (or 12072 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 19.

Adding to 22031023231 its reverse (13232013022), we get a palindrome (35263036253).

The spelling of 22031023231 in words is "twenty-two billion, thirty-one million, twenty-three thousand, two hundred thirty-one".