309114997 has 2 divisors, whose sum is σ = 309114998. Its totient is φ = 309114996.

The previous prime is 309114977. The next prime is 309115013. The reversal of 309114997 is 799411903.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 302794801 + 6320196 = 17401^2 + 2514^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-309114997 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (309114907) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 154557498 + 154557499.

It is an arithmetic number, because the mean of its divisors is an integer number (154557499).

Almost surely, 2^309114997 is an apocalyptic number.

It is an amenable number.

309114997 is a deficient number, since it is larger than the sum of its proper divisors (1).

309114997 is an equidigital number, since it uses as much as digits as its factorization.

309114997 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 61236, while the sum is 43.

The square root of 309114997 is about 17581.6665023541. Note that the first 3 decimals coincide. The cubic root of 309114997 is about 676.1452871261.

The spelling of 309114997 in words is "three hundred nine million, one hundred fourteen thousand, nine hundred ninety-seven".