22304531431 has 24 divisors (see below), whose sum is σ = 28230079920. Its totient is φ = 17465559552.

The previous prime is 22304531429. The next prime is 22304531441. The reversal of 22304531431 is 13413540322.

It is a happy number.

It is not a de Polignac number, because 22304531431 - 2¹ = 22304531429 is a prime.

It is a super-2 number, since 2×22304531431² (a number of 21 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 22304531431.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22304531441) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 118701 + ... + 242278.

It is an arithmetic number, because the mean of its divisors is an integer number (1176253330).

Almost surely, 2^22304531431 is an apocalyptic number.

22304531431 is a deficient number, since it is larger than the sum of its proper divisors (5925548489).

22304531431 is a wasteful number, since it uses less digits than its factorization.

22304531431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 361103 (or 361096 counting only the distinct ones).

The product of its (nonzero) digits is 8640, while the sum is 28.

The spelling of 22304531431 in words is "twenty-two billion, three hundred four million, five hundred thirty-one thousand, four hundred thirty-one".