821234108 has 6 divisors (see below), whose sum is σ = 1437159696. Its totient is φ = 410617052.

The previous prime is 821234083. The next prime is 821234111. The reversal of 821234108 is 801432128.

821234108 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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, 102654260 + ... + 102654267.

It is an arithmetic number, because the mean of its divisors is an integer number (239526616).

Almost surely, 2^821234108 is an apocalyptic number.

It is an amenable number.

821234108 is a deficient number, since it is larger than the sum of its proper divisors (615925588).

821234108 is a wasteful number, since it uses less digits than its factorization.

821234108 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 205308531 (or 205308529 counting only the distinct ones).

The product of its (nonzero) digits is 3072, while the sum is 29.

The square root of 821234108 is about 28657.1824853735. The cubic root of 821234108 is about 936.4594850563.

The spelling of 821234108 in words is "eight hundred twenty-one million, two hundred thirty-four thousand, one hundred eight".