22133031231 has 4 divisors (see below), whose sum is σ = 29510708312. Its totient is φ = 14755354152.

The previous prime is 22133031209. The next prime is 22133031269. The reversal of 22133031231 is 13213033122.

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

It is not a de Polignac number, because 22133031231 - 2⁵ = 22133031199 is a prime.

It is a super-2 number, since 2×22133031231² (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 = 22133031198 and 22133031207.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22133032231) 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 3 ways as a sum of consecutive naturals, for example, 3688838536 + ... + 3688838541.

It is an arithmetic number, because the mean of its divisors is an integer number (7377677078).

Almost surely, 2^22133031231 is an apocalyptic number.

22133031231 is a deficient number, since it is larger than the sum of its proper divisors (7377677081).

22133031231 is an equidigital number, since it uses as much as digits as its factorization.

22133031231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7377677080.

The product of its (nonzero) digits is 648, while the sum is 21.

Adding to 22133031231 its reverse (13213033122), we get a palindrome (35346064353).

The spelling of 22133031231 in words is "twenty-two billion, one hundred thirty-three million, thirty-one thousand, two hundred thirty-one".