12313131197 has 4 divisors (see below), whose sum is σ = 12327985020. Its totient is φ = 12298277376.

The previous prime is 12313131179. The next prime is 12313131217. The reversal of 12313131197 is 79113131321.

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 6719736676 + 5593394521 = 81974^2 + 74789^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12313131197 is a prime.

It is a super-2 number, since 2×12313131197² (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 (12313131497) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7425668 + ... + 7427325.

It is an arithmetic number, because the mean of its divisors is an integer number (3081996255).

Almost surely, 2^12313131197 is an apocalyptic number.

It is an amenable number.

12313131197 is a deficient number, since it is larger than the sum of its proper divisors (14853823).

12313131197 is an equidigital number, since it uses as much as digits as its factorization.

12313131197 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14853822.

The product of its digits is 3402, while the sum is 32.

The spelling of 12313131197 in words is "twelve billion, three hundred thirteen million, one hundred thirty-one thousand, one hundred ninety-seven".