22131040423 has 4 divisors (see below), whose sum is σ = 22134003840. Its totient is φ = 22128077008.

The previous prime is 22131040411. The next prime is 22131040433. The reversal of 22131040423 is 32404013122.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-22131040423 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 22131040394 and 22131040403.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22131040433) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1470478 + ... + 1485451.

It is an arithmetic number, because the mean of its divisors is an integer number (5533500960).

Almost surely, 2^22131040423 is an apocalyptic number.

22131040423 is a deficient number, since it is larger than the sum of its proper divisors (2963417).

22131040423 is an equidigital number, since it uses as much as digits as its factorization.

22131040423 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2963416.

The product of its (nonzero) digits is 1152, while the sum is 22.

Adding to 22131040423 its reverse (32404013122), we get a palindrome (54535053545).

The spelling of 22131040423 in words is "twenty-two billion, one hundred thirty-one million, forty thousand, four hundred twenty-three".