319421808 has 30 divisors (see below), whose sum is σ = 893937824. Its totient is φ = 106473888.

The previous prime is 319421807. The next prime is 319421819. The reversal of 319421808 is 808124913.

It is a Smith number, since the sum of its digits (36) coincides with the sum of the digits of its prime factors.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (319421807) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1108960 + ... + 1109247.

Almost surely, 2^319421808 is an apocalyptic number.

It is an amenable number.

319421808 is an abundant number, since it is smaller than the sum of its proper divisors (574516016).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

319421808 is a wasteful number, since it uses less digits than its factorization.

319421808 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2218221 (or 2218212 counting only the distinct ones).

The product of its (nonzero) digits is 13824, while the sum is 36.

The square root of 319421808 is about 17872.3755555886. The cubic root of 319421808 is about 683.5781743019.

The spelling of 319421808 in words is "three hundred nineteen million, four hundred twenty-one thousand, eight hundred eight".