31032220122133 has 4 divisors (see below), whose sum is σ = 31789103539788. Its totient is φ = 30275336704480.

The previous prime is 31032220122119. The next prime is 31032220122157. The reversal of 31032220122133 is 33122102223013.

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 2301097861969 + 28731122260164 = 1516937^2 + 5360142^2 .

It is a cyclic number.

It is not a de Polignac number, because 31032220122133 - 2³³ = 31023630187541 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 31032220122098 and 31032220122107.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31032220822133) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 378441708766 + ... + 378441708847.

It is an arithmetic number, because the mean of its divisors is an integer number (7947275884947).

Almost surely, 2^{31032220122133} is an apocalyptic number.

It is an amenable number.

31032220122133 is a deficient number, since it is larger than the sum of its proper divisors (756883417655).

31032220122133 is an equidigital number, since it uses as much as digits as its factorization.

31032220122133 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 756883417654.

The product of its (nonzero) digits is 2592, while the sum is 25.

Adding to 31032220122133 its reverse (33122102223013), we get a palindrome (64154322345146).

The spelling of 31032220122133 in words is "thirty-one trillion, thirty-two billion, two hundred twenty million, one hundred twenty-two thousand, one hundred thirty-three".