313949971 has 2 divisors, whose sum is σ = 313949972. Its totient is φ = 313949970.

The previous prime is 313949963. The next prime is 313950019. The reversal of 313949971 is 179949313.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 313949971 - 2³ = 313949963 is a prime.

It is not a weakly prime, because it can be changed into another prime (313949941) 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, 156974985 + 156974986.

It is an arithmetic number, because the mean of its divisors is an integer number (156974986).

Almost surely, 2^313949971 is an apocalyptic number.

313949971 is a deficient number, since it is larger than the sum of its proper divisors (1).

313949971 is an equidigital number, since it uses as much as digits as its factorization.

313949971 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 183708, while the sum is 46.

The square root of 313949971 is about 17718.6334405337. The cubic root of 313949971 is about 679.6523388630.

The spelling of 313949971 in words is "three hundred thirteen million, nine hundred forty-nine thousand, nine hundred seventy-one".