12313122133 has 4 divisors (see below), whose sum is σ = 13260285388. Its totient is φ = 11365958880.

The previous prime is 12313122109. The next prime is 12313122139. The reversal of 12313122133 is 33122131321.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 33122131321 = 48619 ⋅681259.

It can be written as a sum of positive squares in 2 ways, for example, as 5809183524 + 6503938609 = 76218^2 + 80647^2 .

It is a cyclic number.

It is not a de Polignac number, because 12313122133 - 2²¹ = 12311024981 is a prime.

It is a super-2 number, since 2×12313122133² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12313122139) 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, 473581608 + ... + 473581633.

It is an arithmetic number, because the mean of its divisors is an integer number (3315071347).

Almost surely, 2^12313122133 is an apocalyptic number.

12313122133 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

It is an amenable number.

12313122133 is a deficient number, since it is larger than the sum of its proper divisors (947163255).

12313122133 is an equidigital number, since it uses as much as digits as its factorization.

12313122133 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 947163254.

The product of its digits is 648, while the sum is 22.

Adding to 12313122133 its reverse (33122131321), we get a palindrome (45435253454).

The spelling of 12313122133 in words is "twelve billion, three hundred thirteen million, one hundred twenty-two thousand, one hundred thirty-three".