313965749 has 2 divisors, whose sum is σ = 313965750. Its totient is φ = 313965748.

The previous prime is 313965721. The next prime is 313965767. The reversal of 313965749 is 947569313.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 309513649 + 4452100 = 17593^2 + 2110^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-313965749 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (313965349) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 156982874 + 156982875.

It is an arithmetic number, because the mean of its divisors is an integer number (156982875).

Almost surely, 2^313965749 is an apocalyptic number.

It is an amenable number.

313965749 is a deficient number, since it is larger than the sum of its proper divisors (1).

313965749 is an equidigital number, since it uses as much as digits as its factorization.

313965749 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 612360, while the sum is 47.

The square root of 313965749 is about 17719.0786724367. The cubic root of 313965749 is about 679.6637243023.

The spelling of 313965749 in words is "three hundred thirteen million, nine hundred sixty-five thousand, seven hundred forty-nine".