308016139 has 2 divisors, whose sum is σ = 308016140. Its totient is φ = 308016138.

The previous prime is 308016133. The next prime is 308016179. The reversal of 308016139 is 931610803.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 308016139 - 2³ = 308016131 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 308016139.

It is not a weakly prime, because it can be changed into another prime (308016131) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 154008069 + 154008070.

It is an arithmetic number, because the mean of its divisors is an integer number (154008070).

Almost surely, 2^308016139 is an apocalyptic number.

308016139 is a deficient number, since it is larger than the sum of its proper divisors (1).

308016139 is an equidigital number, since it uses as much as digits as its factorization.

308016139 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3888, while the sum is 31.

The square root of 308016139 is about 17550.3885711969. The cubic root of 308016139 is about 675.3431371046.

The spelling of 308016139 in words is "three hundred eight million, sixteen thousand, one hundred thirty-nine".