1297948313 has 2 divisors, whose sum is σ = 1297948314. Its totient is φ = 1297948312.

The previous prime is 1297948297. The next prime is 1297948343. The reversal of 1297948313 is 3138497921.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1170529369 + 127418944 = 34213^2 + 11288^2 .

It is a cyclic number.

It is not a de Polignac number, because 1297948313 - 2⁴ = 1297948297 is a prime.

It is not a weakly prime, because it can be changed into another prime (1297948343) 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, 648974156 + 648974157.

It is an arithmetic number, because the mean of its divisors is an integer number (648974157).

Almost surely, 2^1297948313 is an apocalyptic number.

It is an amenable number.

1297948313 is a deficient number, since it is larger than the sum of its proper divisors (1).

1297948313 is an equidigital number, since it uses as much as digits as its factorization.

1297948313 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 326592, while the sum is 47.

The square root of 1297948313 is about 36027.0497404381. The cubic root of 1297948313 is about 1090.8184277775.

The spelling of 1297948313 in words is "one billion, two hundred ninety-seven million, nine hundred forty-eight thousand, three hundred thirteen".