31312301331133 has 8 divisors (see below), whose sum is σ = 32086137940920. Its totient is φ = 30538946718720.

The previous prime is 31312301331007. The next prime is 31312301331193. The reversal of 31312301331133 is 33113310321313.

It can be written as a sum of positive squares in 4 ways, for example, as 4151964543769 + 27160336787364 = 2037637^2 + 5211558^2 .

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-31312301331133 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31312301331193) 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, 120367810 + ... + 120627667.

It is an arithmetic number, because the mean of its divisors is an integer number (4010767242615).

Almost surely, 2^{31312301331133} is an apocalyptic number.

It is an amenable number.

31312301331133 is a deficient number, since it is larger than the sum of its proper divisors (773836609787).

31312301331133 is a wasteful number, since it uses less digits than its factorization.

31312301331133 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 240998687.

The product of its (nonzero) digits is 4374, while the sum is 28.

Adding to 31312301331133 its reverse (33113310321313), we get a palindrome (64425611652446).

The spelling of 31312301331133 in words is "thirty-one trillion, three hundred twelve billion, three hundred one million, three hundred thirty-one thousand, one hundred thirty-three".