22231430531 has 4 divisors (see below), whose sum is σ = 22231915992. Its totient is φ = 22230945072.

The previous prime is 22231430503. The next prime is 22231430539. The reversal of 22231430531 is 13503413222.

It is a happy number.

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 22231430531 - 2⁶ = 22231430467 is a prime.

It is a super-2 number, since 2×22231430531² (a number of 21 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 22231430531.

It is not an unprimeable number, because it can be changed into a prime (22231430539) 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, 165941 + ... + 268326.

It is an arithmetic number, because the mean of its divisors is an integer number (5557978998).

Almost surely, 2^22231430531 is an apocalyptic number.

22231430531 is a deficient number, since it is larger than the sum of its proper divisors (485461).

22231430531 is an equidigital number, since it uses as much as digits as its factorization.

22231430531 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 485460.

The product of its (nonzero) digits is 4320, while the sum is 26.

Adding to 22231430531 its reverse (13503413222), we get a palindrome (35734843753).

The spelling of 22231430531 in words is "twenty-two billion, two hundred thirty-one million, four hundred thirty thousand, five hundred thirty-one".