31313200213133 has 8 divisors (see below), whose sum is σ = 32065964638488. Its totient is φ = 30566433911104.

The previous prime is 31313200213123. The next prime is 31313200213153. The reversal of 31313200213133 is 33131200231313.

It can be written as a sum of positive squares in 4 ways, for example, as 25429650299524 + 5883549913609 = 5042782^2 + 2425603^2 .

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 31313200213133 - 2²⁴ = 31313183435917 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31313200213123) 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, 1499520266 + ... + 1499541147.

It is an arithmetic number, because the mean of its divisors is an integer number (4008245579811).

Almost surely, 2^{31313200213133} is an apocalyptic number.

It is an amenable number.

31313200213133 is a deficient number, since it is larger than the sum of its proper divisors (752764425355).

31313200213133 is a wasteful number, since it uses less digits than its factorization.

31313200213133 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2999061663.

The product of its (nonzero) digits is 2916, while the sum is 26.

Adding to 31313200213133 its reverse (33131200231313), we get a palindrome (64444400444446).

The spelling of 31313200213133 in words is "thirty-one trillion, three hundred thirteen billion, two hundred million, two hundred thirteen thousand, one hundred thirty-three".