308328139 has 12 divisors (see below), whose sum is σ = 370239168. Its totient is φ = 255754800.

The previous prime is 308328113. The next prime is 308328173. The reversal of 308328139 is 931823803.

It is not a de Polignac number, because 308328139 - 2⁷ = 308328011 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 308328098 and 308328107.

It is not an unprimeable number, because it can be changed into a prime (308328539) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 99972 + ... + 103009.

It is an arithmetic number, because the mean of its divisors is an integer number (30853264).

Almost surely, 2^308328139 is an apocalyptic number.

308328139 is a deficient number, since it is larger than the sum of its proper divisors (61911029).

308328139 is a wasteful number, since it uses less digits than its factorization.

308328139 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 203026 (or 203019 counting only the distinct ones).

The product of its (nonzero) digits is 31104, while the sum is 37.

The square root of 308328139 is about 17559.2750135078. The cubic root of 308328139 is about 675.5710861501.

The spelling of 308328139 in words is "three hundred eight million, three hundred twenty-eight thousand, one hundred thirty-nine".