308116019 has 2 divisors, whose sum is σ = 308116020. Its totient is φ = 308116018.

The previous prime is 308116001. The next prime is 308116021. The reversal of 308116019 is 910611803.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 308116019 - 2⁸ = 308115763 is a prime.

It is a super-2 number, since 2×308116019² = 189870962328816722, which contains 22 as substring.

It is a Sophie Germain prime.

Together with 308116021, it forms a pair of twin primes.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 308115982 and 308116000.

It is not a weakly prime, because it can be changed into another prime (308116069) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 154058009 + 154058010.

It is an arithmetic number, because the mean of its divisors is an integer number (154058010).

Almost surely, 2^308116019 is an apocalyptic number.

308116019 is a deficient number, since it is larger than the sum of its proper divisors (1).

308116019 is an equidigital number, since it uses as much as digits as its factorization.

308116019 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1296, while the sum is 29.

The square root of 308116019 is about 17553.2338615994. The cubic root of 308116019 is about 675.4161267679.

The spelling of 308116019 in words is "three hundred eight million, one hundred sixteen thousand, nineteen".