1313332291 has 2 divisors, whose sum is σ = 1313332292. Its totient is φ = 1313332290.

The previous prime is 1313332277. The next prime is 1313332313. The reversal of 1313332291 is 1922333131.

It is a weak prime.

It is an emirp because it is prime and its reverse (1922333131) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1313332291 - 2⁹ = 1313331779 is a prime.

It is not a weakly prime, because it can be changed into another prime (1310332291) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 656666145 + 656666146.

It is an arithmetic number, because the mean of its divisors is an integer number (656666146).

Almost surely, 2^1313332291 is an apocalyptic number.

1313332291 is a deficient number, since it is larger than the sum of its proper divisors (1).

1313332291 is an equidigital number, since it uses as much as digits as its factorization.

1313332291 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2916, while the sum is 28.

The square root of 1313332291 is about 36239.9267521335. The cubic root of 1313332291 is about 1095.1111668237. Note that the first 4 decimals are identical.

The spelling of 1313332291 in words is "one billion, three hundred thirteen million, three hundred thirty-two thousand, two hundred ninety-one".