22132304231 has 4 divisors (see below), whose sum is σ = 23094578352. Its totient is φ = 21170030112.

The previous prime is 22132304219. The next prime is 22132304237. The reversal of 22132304231 is 13240323122.

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 22132304231 - 2¹⁸ = 22132042087 is a prime.

It is a super-2 number, since 2×22132304231² (a number of 21 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (23), and also a Moran number because the ratio is a prime number: 962274097 = 22132304231 / (2 + 2 + 1 + 3 + 2 + 3 + 0 + 4 + 2 + 3 + 1).

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 22132304197 and 22132304206.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22132304237) 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, 481137026 + ... + 481137071.

It is an arithmetic number, because the mean of its divisors is an integer number (5773644588).

Almost surely, 2^22132304231 is an apocalyptic number.

22132304231 is a deficient number, since it is larger than the sum of its proper divisors (962274121).

22132304231 is an equidigital number, since it uses as much as digits as its factorization.

22132304231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 962274120.

The product of its (nonzero) digits is 1728, while the sum is 23.

Adding to 22132304231 its reverse (13240323122), we get a palindrome (35372627353).

The spelling of 22132304231 in words is "twenty-two billion, one hundred thirty-two million, three hundred four thousand, two hundred thirty-one".