308113688 has 32 divisors (see below), whose sum is σ = 595818720. Its totient is φ = 149280000.

The previous prime is 308113657. The next prime is 308113723. The reversal of 308113688 is 886311803.

308113688 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×308113688² = 189868089465922688, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 46418 + ... + 52638.

It is an arithmetic number, because the mean of its divisors is an integer number (18619335).

Almost surely, 2^308113688 is an apocalyptic number.

It is an amenable number.

308113688 is a deficient number, since it is larger than the sum of its proper divisors (287705032).

308113688 is a wasteful number, since it uses less digits than its factorization.

308113688 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6419 (or 6415 counting only the distinct ones).

The product of its (nonzero) digits is 27648, while the sum is 38.

The square root of 308113688 is about 17553.1674634523. The cubic root of 308113688 is about 675.4144235146.

The spelling of 308113688 in words is "three hundred eight million, one hundred thirteen thousand, six hundred eighty-eight".