313299991 has 2 divisors, whose sum is σ = 313299992. Its totient is φ = 313299990.

The previous prime is 313299989. The next prime is 313300007. The reversal of 313299991 is 199992313.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 313299991 - 2¹ = 313299989 is a prime.

Together with 313299989, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (313299391) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 156649995 + 156649996.

It is an arithmetic number, because the mean of its divisors is an integer number (156649996).

Almost surely, 2^313299991 is an apocalyptic number.

313299991 is a deficient number, since it is larger than the sum of its proper divisors (1).

313299991 is an equidigital number, since it uses as much as digits as its factorization.

313299991 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 118098, while the sum is 46.

The square root of 313299991 is about 17700.2822293883. The cubic root of 313299991 is about 679.1829799604.

It can be divided in two parts, 313 and 299991, that added together give a square (300304 = 548²).

The spelling of 313299991 in words is "three hundred thirteen million, two hundred ninety-nine thousand, nine hundred ninety-one".