313656349 has 2 divisors, whose sum is σ = 313656350. Its totient is φ = 313656348.

The previous prime is 313656337. The next prime is 313656379. The reversal of 313656349 is 943656313.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 309584025 + 4072324 = 17595^2 + 2018^2 .

It is an emirp because it is prime and its reverse (943656313) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 313656349 - 2¹³ = 313648157 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (313656379) 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, 156828174 + 156828175.

It is an arithmetic number, because the mean of its divisors is an integer number (156828175).

Almost surely, 2^313656349 is an apocalyptic number.

It is an amenable number.

313656349 is a deficient number, since it is larger than the sum of its proper divisors (1).

313656349 is an equidigital number, since it uses as much as digits as its factorization.

313656349 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 174960, while the sum is 40.

The square root of 313656349 is about 17710.3458181934. The cubic root of 313656349 is about 679.4403909488.

The spelling of 313656349 in words is "three hundred thirteen million, six hundred fifty-six thousand, three hundred forty-nine".