31113022001321 has 8 divisors (see below), whose sum is σ = 33506493688584. Its totient is φ = 28719573500160.

The previous prime is 31113022001297. The next prime is 31113022001371. The reversal of 31113022001321 is 12310022031113.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 5966197056400 + 25146824944921 = 2442580^2 + 5014661^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 31113022001321 - 2¹⁴ = 31113021984937 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 31113022001293 and 31113022001302.

It is not an unprimeable number, because it can be changed into a prime (31113022001371) 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, 2958050 + ... + 8424731.

It is an arithmetic number, because the mean of its divisors is an integer number (4188311711073).

Almost surely, 2^{31113022001321} is an apocalyptic number.

It is an amenable number.

31113022001321 is a deficient number, since it is larger than the sum of its proper divisors (2393471687263).

31113022001321 is a wasteful number, since it uses less digits than its factorization.

31113022001321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11593051.

The product of its (nonzero) digits is 216, while the sum is 20.

Adding to 31113022001321 its reverse (12310022031113), we get a palindrome (43423044032434).

The spelling of 31113022001321 in words is "thirty-one trillion, one hundred thirteen billion, twenty-two million, one thousand, three hundred twenty-one".