12313131223 has 2 divisors, whose sum is σ = 12313131224. Its totient is φ = 12313131222.

The previous prime is 12313131217. The next prime is 12313131269. The reversal of 12313131223 is 32213131321.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 12313131223 - 2¹⁷ = 12313000151 is a prime.

It is a super-2 number, since 2×12313131223² (a number of 21 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 12313131194 and 12313131203.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12313131823) 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 as a sum of consecutive naturals, namely, 6156565611 + 6156565612.

It is an arithmetic number, because the mean of its divisors is an integer number (6156565612).

Almost surely, 2^12313131223 is an apocalyptic number.

12313131223 is a deficient number, since it is larger than the sum of its proper divisors (1).

12313131223 is an equidigital number, since it uses as much as digits as its factorization.

12313131223 is an odious number, because the sum of its binary digits is odd.

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

Adding to 12313131223 its reverse (32213131321), we get a palindrome (44526262544).

The spelling of 12313131223 in words is "twelve billion, three hundred thirteen million, one hundred thirty-one thousand, two hundred twenty-three".