308430812 has 6 divisors (see below), whose sum is σ = 539753928. Its totient is φ = 154215404.

The previous prime is 308430769. The next prime is 308430877. The reversal of 308430812 is 218034803.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 38553848 + ... + 38553855.

It is an arithmetic number, because the mean of its divisors is an integer number (89958988).

Almost surely, 2^308430812 is an apocalyptic number.

It is an amenable number.

308430812 is a deficient number, since it is larger than the sum of its proper divisors (231323116).

308430812 is a wasteful number, since it uses less digits than its factorization.

308430812 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 77107707 (or 77107705 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 29.

The square root of 308430812 is about 17562.1983817516. The cubic root of 308430812 is about 675.6460660212.

The spelling of 308430812 in words is "three hundred eight million, four hundred thirty thousand, eight hundred twelve".