1313313293 has 2 divisors, whose sum is σ = 1313313294. Its totient is φ = 1313313292.

The previous prime is 1313313263. The next prime is 1313313311. The reversal of 1313313293 is 3923133131.

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., 1312395529 + 917764 = 36227^2 + 958^2 .

It is a cyclic number.

It is not a de Polignac number, because 1313313293 - 2⁶ = 1313313229 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1313313203) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 656656646 + 656656647.

It is an arithmetic number, because the mean of its divisors is an integer number (656656647).

Almost surely, 2^1313313293 is an apocalyptic number.

It is an amenable number.

1313313293 is a deficient number, since it is larger than the sum of its proper divisors (1).

1313313293 is an equidigital number, since it uses as much as digits as its factorization.

1313313293 is an evil number, because the sum of its binary digits is even.

The product of its digits is 4374, while the sum is 29.

The square root of 1313313293 is about 36239.6646369693. The cubic root of 1313313293 is about 1095.1058863570.

The spelling of 1313313293 in words is "one billion, three hundred thirteen million, three hundred thirteen thousand, two hundred ninety-three".