31322121322133 has 4 divisors (see below), whose sum is σ = 31327051616748. Its totient is φ = 31317191027520.

The previous prime is 31322121322109. The next prime is 31322121322147. The reversal of 31322121322133 is 33122312122313.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 12339918403684 + 18982202918449 = 3512822^2 + 4356857^2 .

It is a cyclic number.

It is not a de Polignac number, because 31322121322133 - 2⁸ = 31322121321877 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 31322121322096 and 31322121322105.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31322121322153) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2465137778 + ... + 2465150483.

It is an arithmetic number, because the mean of its divisors is an integer number (7831762904187).

Almost surely, 2^{31322121322133} is an apocalyptic number.

It is an amenable number.

31322121322133 is a deficient number, since it is larger than the sum of its proper divisors (4930294615).

31322121322133 is an equidigital number, since it uses as much as digits as its factorization.

31322121322133 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4930294614.

The product of its digits is 7776, while the sum is 29.

Adding to 31322121322133 its reverse (33122312122313), we get a palindrome (64444433444446).

The spelling of 31322121322133 in words is "thirty-one trillion, three hundred twenty-two billion, one hundred twenty-one million, three hundred twenty-two thousand, one hundred thirty-three".