31113232112321 has 16 divisors (see below), whose sum is σ = 31236850578240. Its totient is φ = 30989893109760.

The previous prime is 31113232112227. The next prime is 31113232112327. The reversal of 31113232112321 is 12321123231113.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-31113232112321 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (31113232112327) 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, 1066273910 + ... + 1066303088.

It is an arithmetic number, because the mean of its divisors is an integer number (1952303161140).

Almost surely, 2^{31113232112321} is an apocalyptic number.

It is an amenable number.

31113232112321 is a deficient number, since it is larger than the sum of its proper divisors (123618465919).

31113232112321 is a wasteful number, since it uses less digits than its factorization.

31113232112321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33824.

The product of its digits is 1296, while the sum is 26.

Adding to 31113232112321 its reverse (12321123231113), we get a palindrome (43434355343434).

The spelling of 31113232112321 in words is "thirty-one trillion, one hundred thirteen billion, two hundred thirty-two million, one hundred twelve thousand, three hundred twenty-one".