313144109 has 2 divisors, whose sum is σ = 313144110. Its totient is φ = 313144108.

The previous prime is 313144099. The next prime is 313144129. The reversal of 313144109 is 901441313.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 253128100 + 60016009 = 15910^2 + 7747^2 .

It is an emirp because it is prime and its reverse (901441313) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-313144109 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (313144129) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 156572054 + 156572055.

It is an arithmetic number, because the mean of its divisors is an integer number (156572055).

Almost surely, 2^313144109 is an apocalyptic number.

It is an amenable number.

313144109 is a deficient number, since it is larger than the sum of its proper divisors (1).

313144109 is an equidigital number, since it uses as much as digits as its factorization.

313144109 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1296, while the sum is 26.

The square root of 313144109 is about 17695.8783054134. The cubic root of 313144109 is about 679.0703190730.

The spelling of 313144109 in words is "three hundred thirteen million, one hundred forty-four thousand, one hundred nine".