13231323212 has 24 divisors (see below), whose sum is σ = 23512048560. Its totient is φ = 6513693120.

The previous prime is 13231323211. The next prime is 13231323251. The reversal of 13231323212 is 21232313231.

It is not an unprimeable number, because it can be changed into a prime (13231323211) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 584114 + ... + 606342.

It is an arithmetic number, because the mean of its divisors is an integer number (979668690).

Almost surely, 2^13231323212 is an apocalyptic number.

It is an amenable number.

13231323212 is a deficient number, since it is larger than the sum of its proper divisors (10280725348).

13231323212 is a wasteful number, since it uses less digits than its factorization.

13231323212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24521 (or 24519 counting only the distinct ones).

The product of its digits is 1296, while the sum is 23.

Adding to 13231323212 its reverse (21232313231), we get a palindrome (34463636443).

The spelling of 13231323212 in words is "thirteen billion, two hundred thirty-one million, three hundred twenty-three thousand, two hundred twelve".