102308817 has 32 divisors (see below), whose sum is σ = 152127360. Its totient is φ = 60756480.

The previous prime is 102308809. The next prime is 102308821. The reversal of 102308817 is 718803201.

It is a happy number.

It is not a de Polignac number, because 102308817 - 2³ = 102308809 is a prime.

It is not an unprimeable number, because it can be changed into a prime (102308827) 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 31 ways as a sum of consecutive naturals, for example, 173998 + ... + 174584.

It is an arithmetic number, because the mean of its divisors is an integer number (4753980).

Almost surely, 2^102308817 is an apocalyptic number.

It is an amenable number.

102308817 is a deficient number, since it is larger than the sum of its proper divisors (49818543).

102308817 is a wasteful number, since it uses less digits than its factorization.

102308817 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 753.

The product of its (nonzero) digits is 2688, while the sum is 30.

The square root of 102308817 is about 10114.7821034365. The cubic root of 102308817 is about 467.7039319230.

The spelling of 102308817 in words is "one hundred two million, three hundred eight thousand, eight hundred seventeen".