22031113231 has 4 divisors (see below), whose sum is σ = 22066028464. Its totient is φ = 21996198000.

The previous prime is 22031113219. The next prime is 22031113271. The reversal of 22031113231 is 13231113022.

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 22031113231 - 2⁷ = 22031113103 is a prime.

It is a super-2 number, since 2×22031113231² (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 = 22031113199 and 22031113208.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22031113271) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 17456670 + ... + 17457931.

It is an arithmetic number, because the mean of its divisors is an integer number (5516507116).

Almost surely, 2^22031113231 is an apocalyptic number.

22031113231 is a deficient number, since it is larger than the sum of its proper divisors (34915233).

22031113231 is an equidigital number, since it uses as much as digits as its factorization.

22031113231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34915232.

The product of its (nonzero) digits is 216, while the sum is 19.

Adding to 22031113231 its reverse (13231113022), we get a palindrome (35262226253).

The spelling of 22031113231 in words is "twenty-two billion, thirty-one million, one hundred thirteen thousand, two hundred thirty-one".