313902749 has 2 divisors, whose sum is σ = 313902750. Its totient is φ = 313902748.

The previous prime is 313902731. The next prime is 313902769. The reversal of 313902749 is 947209313.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 250588900 + 63313849 = 15830^2 + 7957^2 .

It is an emirp because it is prime and its reverse (947209313) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 313902749 - 2²⁸ = 45467293 is a prime.

It is a Sophie Germain prime.

It is a Chen 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 (313902769) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 156951374 + 156951375.

It is an arithmetic number, because the mean of its divisors is an integer number (156951375).

Almost surely, 2^313902749 is an apocalyptic number.

It is an amenable number.

313902749 is a deficient number, since it is larger than the sum of its proper divisors (1).

313902749 is an equidigital number, since it uses as much as digits as its factorization.

313902749 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 40824, while the sum is 38.

The square root of 313902749 is about 17717.3008384460. The cubic root of 313902749 is about 679.6182610852.

The spelling of 313902749 in words is "three hundred thirteen million, nine hundred two thousand, seven hundred forty-nine".