22040423231 has 2 divisors, whose sum is σ = 22040423232. Its totient is φ = 22040423230.

The previous prime is 22040423219. The next prime is 22040423261. The reversal of 22040423231 is 13232404022.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 22040423231 - 2¹⁰ = 22040422207 is a prime.

It is a super-3 number, since 3×22040423231³ (a number of 32 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Sophie Germain prime.

It is a junction number, because it is equal to n+sod(n) for n = 22040423197 and 22040423206.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (22040423261) 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 as a sum of consecutive naturals, namely, 11020211615 + 11020211616.

It is an arithmetic number, because the mean of its divisors is an integer number (11020211616).

Almost surely, 2^22040423231 is an apocalyptic number.

22040423231 is a deficient number, since it is larger than the sum of its proper divisors (1).

22040423231 is an equidigital number, since it uses as much as digits as its factorization.

22040423231 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2304, while the sum is 23.

Adding to 22040423231 its reverse (13232404022), we get a palindrome (35272827253).

The spelling of 22040423231 in words is "twenty-two billion, forty million, four hundred twenty-three thousand, two hundred thirty-one".