13231222312 has 64 divisors (see below), whose sum is σ = 31513795200. Its totient is φ = 5057744640.

The previous prime is 13231222289. The next prime is 13231222369. The reversal of 13231222312 is 21322213231.

It is a super-4 number, since 4×13231222312⁴ (a number of 42 digits) contains 4444 as substring.

It is a Harshad number since it is a multiple of its sum of digits (22).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 169987 + ... + 235282.

It is an arithmetic number, because the mean of its divisors is an integer number (492403050).

Almost surely, 2^13231222312 is an apocalyptic number.

It is an amenable number.

13231222312 is an abundant number, since it is smaller than the sum of its proper divisors (18282572888).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

13231222312 is a wasteful number, since it uses less digits than its factorization.

13231222312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 405346 (or 405342 counting only the distinct ones).

The product of its digits is 864, while the sum is 22.

Adding to 13231222312 its reverse (21322213231), we get a palindrome (34553435543).

The spelling of 13231222312 in words is "thirteen billion, two hundred thirty-one million, two hundred twenty-two thousand, three hundred twelve".