313909 has 2 divisors, whose sum is σ = 313910. Its totient is φ = 313908.

The previous prime is 313897. The next prime is 313921. The reversal of 313909 is 909313.

It is a balanced prime because it is at equal distance from previous prime (313897) and next prime (313921).

It can be written as a sum of positive squares in only one way, i.e., 305809 + 8100 = 553^2 + 90^2 .

It is a cyclic number.

It is not a de Polignac number, because 313909 - 2¹³ = 305717 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (313949) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 156954 + 156955.

It is an arithmetic number, because the mean of its divisors is an integer number (156955).

2³¹³⁹⁰⁹ is an apocalyptic number.

It is an amenable number.

313909 is a deficient number, since it is larger than the sum of its proper divisors (1).

313909 is an equidigital number, since it uses as much as digits as its factorization.

313909 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 729, while the sum is 25.

The square root of 313909 is about 560.2758249291. The cubic root of 313909 is about 67.9622772318.

The spelling of 313909 in words is "three hundred thirteen thousand, nine hundred nine".