23231222213231 has 16 divisors (see below), whose sum is σ = 23451024015360. Its totient is φ = 23012008619040.

The previous prime is 23231222213197. The next prime is 23231222213281. The reversal of 23231222213231 is 13231222213232.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-23231222213231 is a prime.

It is a super-2 number, since 2×23231222213231² (a number of 28 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 = 23231222213194 and 23231222213203.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23231222213281) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 573151436 + ... + 573191966.

It is an arithmetic number, because the mean of its divisors is an integer number (1465689000960).

Almost surely, 2^{23231222213231} is an apocalyptic number.

23231222213231 is a deficient number, since it is larger than the sum of its proper divisors (219801802129).

23231222213231 is a wasteful number, since it uses less digits than its factorization.

23231222213231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 47654.

The product of its digits is 10368, while the sum is 29.

Adding to 23231222213231 its reverse (13231222213232), we get a palindrome (36462444426463).

Subtracting from 23231222213231 its reverse (13231222213232), we obtain a palindrome (9999999999999).

The spelling of 23231222213231 in words is "twenty-three trillion, two hundred thirty-one billion, two hundred twenty-two million, two hundred thirteen thousand, two hundred thirty-one".