313103309 has 4 divisors (see below), whose sum is σ = 313173504. Its totient is φ = 313033116.

The previous prime is 313103291. The next prime is 313103311. The reversal of 313103309 is 903301313.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 313103309 - 2²⁰ = 312054733 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (313103369) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 27917 + ... + 37490.

It is an arithmetic number, because the mean of its divisors is an integer number (78293376).

Almost surely, 2^313103309 is an apocalyptic number.

It is an amenable number.

313103309 is a deficient number, since it is larger than the sum of its proper divisors (70195).

313103309 is an equidigital number, since it uses as much as digits as its factorization.

313103309 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 70194.

The product of its (nonzero) digits is 729, while the sum is 23.

The square root of 313103309 is about 17694.7254570395. The cubic root of 313103309 is about 679.0408254398.

The spelling of 313103309 in words is "three hundred thirteen million, one hundred three thousand, three hundred nine".