1312689029 has 2 divisors, whose sum is σ = 1312689030. Its totient is φ = 1312689028.

The previous prime is 1312689023. The next prime is 1312689067. The reversal of 1312689029 is 9209862131.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1281496804 + 31192225 = 35798^2 + 5585^2 .

It is a cyclic number.

It is not a de Polignac number, because 1312689029 - 2⁴ = 1312689013 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1312689023) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 656344514 + 656344515.

It is an arithmetic number, because the mean of its divisors is an integer number (656344515).

Almost surely, 2^1312689029 is an apocalyptic number.

It is an amenable number.

1312689029 is a deficient number, since it is larger than the sum of its proper divisors (1).

1312689029 is an equidigital number, since it uses as much as digits as its factorization.

1312689029 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 46656, while the sum is 41.

The square root of 1312689029 is about 36231.0506195998. The cubic root of 1312689029 is about 1094.9323447424.

The spelling of 1312689029 in words is "one billion, three hundred twelve million, six hundred eighty-nine thousand, twenty-nine".