22530809731 has 4 divisors (see below), whose sum is σ = 22582133200. Its totient is φ = 22479486264.

The previous prime is 22530809689. The next prime is 22530809747. The reversal of 22530809731 is 13790803522.

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-22530809731 is a prime.

It is a super-2 number, since 2×22530809731² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (22530809531) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 25661076 + ... + 25661953.

It is an arithmetic number, because the mean of its divisors is an integer number (5645533300).

Almost surely, 2^22530809731 is an apocalyptic number.

22530809731 is a deficient number, since it is larger than the sum of its proper divisors (51323469).

22530809731 is an equidigital number, since it uses as much as digits as its factorization.

22530809731 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 51323468.

The product of its (nonzero) digits is 90720, while the sum is 40.

The spelling of 22530809731 in words is "twenty-two billion, five hundred thirty million, eight hundred nine thousand, seven hundred thirty-one".