1296672313 has 2 divisors, whose sum is σ = 1296672314. Its totient is φ = 1296672312.

The previous prime is 1296672283. The next prime is 1296672329. The reversal of 1296672313 is 3132766921.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 792535104 + 504137209 = 28152^2 + 22453^2 .

It is a cyclic number.

It is not a de Polignac number, because 1296672313 - 2¹³ = 1296664121 is a prime.

It is not a weakly prime, because it can be changed into another prime (1296672343) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 648336156 + 648336157.

It is an arithmetic number, because the mean of its divisors is an integer number (648336157).

Almost surely, 2^1296672313 is an apocalyptic number.

It is an amenable number.

1296672313 is a deficient number, since it is larger than the sum of its proper divisors (1).

1296672313 is an equidigital number, since it uses as much as digits as its factorization.

1296672313 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 81648, while the sum is 40.

The square root of 1296672313 is about 36009.3364698657. The cubic root of 1296672313 is about 1090.4608530150.

The spelling of 1296672313 in words is "one billion, two hundred ninety-six million, six hundred seventy-two thousand, three hundred thirteen".