313203301991 has 2 divisors, whose sum is σ = 313203301992. Its totient is φ = 313203301990.

The previous prime is 313203301979. The next prime is 313203302011. The reversal of 313203301991 is 199103302313.

It is a weak prime.

It is an emirp because it is prime and its reverse (199103302313) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-313203301991 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (313203303991) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 156601650995 + 156601650996.

It is an arithmetic number, because the mean of its divisors is an integer number (156601650996).

Almost surely, 2^313203301991 is an apocalyptic number.

313203301991 is a deficient number, since it is larger than the sum of its proper divisors (1).

313203301991 is an equidigital number, since it uses as much as digits as its factorization.

313203301991 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 13122, while the sum is 35.

The spelling of 313203301991 in words is "three hundred thirteen billion, two hundred three million, three hundred one thousand, nine hundred ninety-one".