309420346 has 8 divisors (see below), whose sum is σ = 474924384. Its totient is φ = 151112220.

The previous prime is 309420341. The next prime is 309420359. The reversal of 309420346 is 643024903.

309420346 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (309420341) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 1798870 + ... + 1799041.

It is an arithmetic number, because the mean of its divisors is an integer number (59365548).

Almost surely, 2^309420346 is an apocalyptic number.

309420346 is a deficient number, since it is larger than the sum of its proper divisors (165504038).

309420346 is a wasteful number, since it uses less digits than its factorization.

309420346 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3597956.

The product of its (nonzero) digits is 15552, while the sum is 31.

The square root of 309420346 is about 17590.3480920646. The cubic root of 309420346 is about 676.3678497591.

The spelling of 309420346 in words is "three hundred nine million, four hundred twenty thousand, three hundred forty-six".