22023231231 has 4 divisors (see below), whose sum is σ = 29364308312. Its totient is φ = 14682154152.

The previous prime is 22023231211. The next prime is 22023231233. The reversal of 22023231231 is 13213232022.

It is a happy number.

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

It is not a de Polignac number, because 22023231231 - 2⁷ = 22023231103 is a prime.

It is a super-2 number, since 2×22023231231² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 22023231198 and 22023231207.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22023231233) 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, 3670538536 + ... + 3670538541.

It is an arithmetic number, because the mean of its divisors is an integer number (7341077078).

Almost surely, 2^22023231231 is an apocalyptic number.

22023231231 is a deficient number, since it is larger than the sum of its proper divisors (7341077081).

22023231231 is an equidigital number, since it uses as much as digits as its factorization.

22023231231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7341077080.

The product of its (nonzero) digits is 864, while the sum is 21.

Adding to 22023231231 its reverse (13213232022), we get a palindrome (35236463253).

The spelling of 22023231231 in words is "twenty-two billion, twenty-three million, two hundred thirty-one thousand, two hundred thirty-one".