1313444273 has 2 divisors, whose sum is σ = 1313444274. Its totient is φ = 1313444272.

The previous prime is 1313444263. The next prime is 1313444309. The reversal of 1313444273 is 3724443131.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 754216369 + 559227904 = 27463^2 + 23648^2 .

It is a cyclic number.

It is not a de Polignac number, because 1313444273 - 2²⁰ = 1312395697 is a prime.

It is not a weakly prime, because it can be changed into another prime (1313444213) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 656722136 + 656722137.

It is an arithmetic number, because the mean of its divisors is an integer number (656722137).

Almost surely, 2^1313444273 is an apocalyptic number.

It is an amenable number.

1313444273 is a deficient number, since it is larger than the sum of its proper divisors (1).

1313444273 is an equidigital number, since it uses as much as digits as its factorization.

1313444273 is an evil number, because the sum of its binary digits is even.

The product of its digits is 24192, while the sum is 32.

The square root of 1313444273 is about 36241.4717278424. The cubic root of 1313444273 is about 1095.1422910244.

The spelling of 1313444273 in words is "one billion, three hundred thirteen million, four hundred forty-four thousand, two hundred seventy-three".