315109 has 2 divisors, whose sum is σ = 315110. Its totient is φ = 315108.

The previous prime is 315103. The next prime is 315127. The reversal of 315109 is 901513.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 172225 + 142884 = 415^2 + 378^2 .

It is an emirp because it is prime and its reverse (901513) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 315109 - 2⁹ = 314597 is a prime.

It is a Chen prime.

315109 is a lucky number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (315103) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 157554 + 157555.

It is an arithmetic number, because the mean of its divisors is an integer number (157555).

2³¹⁵¹⁰⁹ is an apocalyptic number.

It is an amenable number.

315109 is a deficient number, since it is larger than the sum of its proper divisors (1).

315109 is an equidigital number, since it uses as much as digits as its factorization.

315109 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 135, while the sum is 19.

The square root of 315109 is about 561.3457045351. The cubic root of 315109 is about 68.0487683607.

It can be divided in two parts, 315 and 109, that added together give a palindrome (424).

The spelling of 315109 in words is "three hundred fifteen thousand, one hundred nine".