22231223031 has 16 divisors (see below), whose sum is σ = 29913700320. Its totient is φ = 14684866560.

The previous prime is 22231223023. The next prime is 22231223101. The reversal of 22231223031 is 13032213222.

It is a happy number.

It is not a de Polignac number, because 22231223031 - 2³ = 22231223023 is a prime.

It is a super-2 number, since 2×22231223031² (a number of 21 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 22231222989 and 22231223007.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22231224031) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1248511 + ... + 1266191.

It is an arithmetic number, because the mean of its divisors is an integer number (1869606270).

Almost surely, 2^22231223031 is an apocalyptic number.

22231223031 is a deficient number, since it is larger than the sum of its proper divisors (7682477289).

22231223031 is a wasteful number, since it uses less digits than its factorization.

22231223031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21506.

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

Adding to 22231223031 its reverse (13032213222), we get a palindrome (35263436253).

The spelling of 22231223031 in words is "twenty-two billion, two hundred thirty-one million, two hundred twenty-three thousand, thirty-one".