1312012311229 has 2 divisors, whose sum is σ = 1312012311230. Its totient is φ = 1312012311228.

The previous prime is 1312012311173. The next prime is 1312012311293. The reversal of 1312012311229 is 9221132102131.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1133905522500 + 178106788729 = 1064850^2 + 422027^2 .

It is a cyclic number.

It is not a de Polignac number, because 1312012311229 - 2⁷ = 1312012311101 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1312012311197 and 1312012311206.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1312012311299) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 656006155614 + 656006155615.

It is an arithmetic number, because the mean of its divisors is an integer number (656006155615).

Almost surely, 2^{1312012311229} is an apocalyptic number.

It is an amenable number.

1312012311229 is a deficient number, since it is larger than the sum of its proper divisors (1).

1312012311229 is an equidigital number, since it uses as much as digits as its factorization.

1312012311229 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1296, while the sum is 28.

The spelling of 1312012311229 in words is "one trillion, three hundred twelve billion, twelve million, three hundred eleven thousand, two hundred twenty-nine".