22730912731 has 2 divisors, whose sum is σ = 22730912732. Its totient is φ = 22730912730.

The previous prime is 22730912723. The next prime is 22730912753. The reversal of 22730912731 is 13721903722.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 22730912731 - 2³ = 22730912723 is a prime.

It is a super-2 number, since 2×22730912731² (a number of 22 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (22530912731) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11365456365 + 11365456366.

It is an arithmetic number, because the mean of its divisors is an integer number (11365456366).

Almost surely, 2^22730912731 is an apocalyptic number.

22730912731 is a deficient number, since it is larger than the sum of its proper divisors (1).

22730912731 is an equidigital number, since it uses as much as digits as its factorization.

22730912731 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 31752, while the sum is 37.

Subtracting from 22730912731 its reverse (13721903722), we obtain a palindrome (9009009009).

The spelling of 22730912731 in words is "twenty-two billion, seven hundred thirty million, nine hundred twelve thousand, seven hundred thirty-one".