1312402229 has 2 divisors, whose sum is σ = 1312402230. Its totient is φ = 1312402228.

The previous prime is 1312402199. The next prime is 1312402253. The reversal of 1312402229 is 9222042131.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1143454225 + 168948004 = 33815^2 + 12998^2 .

It is a cyclic number.

It is not a de Polignac number, because 1312402229 - 2¹⁶ = 1312336693 is a prime.

It is a super-2 number, since 2×1312402229² = 3444799221368336882, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1312402198 and 1312402207.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1312402529) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 656201114 + 656201115.

It is an arithmetic number, because the mean of its divisors is an integer number (656201115).

Almost surely, 2^1312402229 is an apocalyptic number.

It is an amenable number.

1312402229 is a deficient number, since it is larger than the sum of its proper divisors (1).

1312402229 is an equidigital number, since it uses as much as digits as its factorization.

1312402229 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1728, while the sum is 26.

The square root of 1312402229 is about 36227.0924723473. The cubic root of 1312402229 is about 1094.8525976324.

The spelling of 1312402229 in words is "one billion, three hundred twelve million, four hundred two thousand, two hundred twenty-nine".