31113111132321 has 32 divisors (see below), whose sum is σ = 44735964094080. Its totient is φ = 19169660505600.

The previous prime is 31113111132289. The next prime is 31113111132347. The reversal of 31113111132321 is 12323111131113.

It is not a de Polignac number, because 31113111132321 - 2⁵ = 31113111132289 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 31113111132291 and 31113111132300.

It is not an unprimeable number, because it can be changed into a prime (31113111132391) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 30868891 + ... + 31860863.

It is an arithmetic number, because the mean of its divisors is an integer number (1397998877940).

Almost surely, 2^{31113111132321} is an apocalyptic number.

It is an amenable number.

31113111132321 is a deficient number, since it is larger than the sum of its proper divisors (13622852961759).

31113111132321 is a wasteful number, since it uses less digits than its factorization.

31113111132321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1005457.

The product of its digits is 324, while the sum is 24.

Adding to 31113111132321 its reverse (12323111131113), we get a palindrome (43436222263434).

The spelling of 31113111132321 in words is "thirty-one trillion, one hundred thirteen billion, one hundred eleven million, one hundred thirty-two thousand, three hundred twenty-one".