30831668 has 24 divisors (see below), whose sum is σ = 61780992. Its totient is φ = 13188384.

The previous prime is 30831643. The next prime is 30831673. The reversal of 30831668 is 86613803.

It is a happy number.

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, 27821 + ... + 28907.

It is an arithmetic number, because the mean of its divisors is an integer number (2574208).

Almost surely, 2^30831668 is an apocalyptic number.

It is an amenable number.

30831668 is an abundant number, since it is smaller than the sum of its proper divisors (30949324).

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

30831668 is a wasteful number, since it uses less digits than its factorization.

30831668 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2111 (or 2109 counting only the distinct ones).

The product of its (nonzero) digits is 20736, while the sum is 35.

The square root of 30831668 is about 5552.6271259648. The cubic root of 30831668 is about 313.5684362972.

The spelling of 30831668 in words is "thirty million, eight hundred thirty-one thousand, six hundred sixty-eight".