313223309 has 16 divisors (see below), whose sum is σ = 369887232. Its totient is φ = 259661808.

The previous prime is 313223299. The next prime is 313223327. The reversal of 313223309 is 903322313.

It is not a de Polignac number, because 313223309 - 2¹⁶ = 313157773 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (313220309) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 25952 + ... + 36054.

It is an arithmetic number, because the mean of its divisors is an integer number (23117952).

Almost surely, 2^313223309 is an apocalyptic number.

It is an amenable number.

313223309 is a deficient number, since it is larger than the sum of its proper divisors (56663923).

313223309 is a wasteful number, since it uses less digits than its factorization.

313223309 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10256.

The product of its (nonzero) digits is 2916, while the sum is 26.

The square root of 313223309 is about 17698.1159731764. The cubic root of 313223309 is about 679.1275641072.

The spelling of 313223309 in words is "three hundred thirteen million, two hundred twenty-three thousand, three hundred nine".