313543691 has 2 divisors, whose sum is σ = 313543692. Its totient is φ = 313543690.

The previous prime is 313543667. The next prime is 313543697. The reversal of 313543691 is 196345313.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 313543691 - 2¹⁸ = 313281547 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (313543697) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 156771845 + 156771846.

It is an arithmetic number, because the mean of its divisors is an integer number (156771846).

Almost surely, 2^313543691 is an apocalyptic number.

313543691 is a deficient number, since it is larger than the sum of its proper divisors (1).

313543691 is an equidigital number, since it uses as much as digits as its factorization.

313543691 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 29160, while the sum is 35.

The square root of 313543691 is about 17707.1649622406. The cubic root of 313543691 is about 679.3590348596.

The spelling of 313543691 in words is "three hundred thirteen million, five hundred forty-three thousand, six hundred ninety-one".