22541023531 has 4 divisors (see below), whose sum is σ = 24274948432. Its totient is φ = 20807098632.

The previous prime is 22541023481. The next prime is 22541023541. The reversal of 22541023531 is 13532014522.

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

It is a cyclic number.

It is not a de Polignac number, because 22541023531 - 2¹¹ = 22541021483 is a prime.

It is a super-2 number, since 2×22541023531² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 22541023531.

It is not an unprimeable number, because it can be changed into a prime (22541023541) 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, 866962431 + ... + 866962456.

It is an arithmetic number, because the mean of its divisors is an integer number (6068737108).

Almost surely, 2^22541023531 is an apocalyptic number.

22541023531 is a deficient number, since it is larger than the sum of its proper divisors (1733924901).

22541023531 is a wasteful number, since it uses less digits than its factorization.

22541023531 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1733924900.

The product of its (nonzero) digits is 7200, while the sum is 28.

Subtracting from 22541023531 its reverse (13532014522), we obtain a palindrome (9009009009).

The spelling of 22541023531 in words is "twenty-two billion, five hundred forty-one million, twenty-three thousand, five hundred thirty-one".