102800109 has 8 divisors (see below), whose sum is σ = 137116512. Its totient is φ = 68508560.

The previous prime is 102800083. The next prime is 102800111. The reversal of 102800109 is 901008201.

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

It is a cyclic number.

It is not a de Polignac number, because 102800109 - 2¹² = 102796013 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (102800129) 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 7 ways as a sum of consecutive naturals, for example, 8254 + ... + 16544.

It is an arithmetic number, because the mean of its divisors is an integer number (17139564).

Almost surely, 2^102800109 is an apocalyptic number.

It is an amenable number.

102800109 is a deficient number, since it is larger than the sum of its proper divisors (34316403).

102800109 is an equidigital number, since it uses as much as digits as its factorization.

102800109 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12427.

The product of its (nonzero) digits is 144, while the sum is 21.

The square root of 102800109 is about 10139.0388597736. The cubic root of 102800109 is about 468.4513825705.

The spelling of 102800109 in words is "one hundred two million, eight hundred thousand, one hundred nine".