1312312012223 has 2 divisors, whose sum is σ = 1312312012224. Its totient is φ = 1312312012222.

The previous prime is 1312312012201. The next prime is 1312312012247. The reversal of 1312312012223 is 3222102132131.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1312312012223 - 2²⁰ = 1312310963647 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1312362012223) 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, 656156006111 + 656156006112.

It is an arithmetic number, because the mean of its divisors is an integer number (656156006112).

Almost surely, 2^{1312312012223} is an apocalyptic number.

1312312012223 is a deficient number, since it is larger than the sum of its proper divisors (1).

1312312012223 is an equidigital number, since it uses as much as digits as its factorization.

1312312012223 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 864, while the sum is 23.

Adding to 1312312012223 its reverse (3222102132131), we get a palindrome (4534414144354).

The spelling of 1312312012223 in words is "one trillion, three hundred twelve billion, three hundred twelve million, twelve thousand, two hundred twenty-three".