100302109 has 4 divisors (see below), whose sum is σ = 100332540. Its totient is φ = 100271680.

The previous prime is 100302071. The next prime is 100302133. The reversal of 100302109 is 901203001.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 901203001 = 41 ⋅21980561.

It can be written as a sum of positive squares in 2 ways, for example, as 78818884 + 21483225 = 8878^2 + 4635^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-100302109 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 100302092 and 100302101.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (100302179) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9574 + ... + 17095.

It is an arithmetic number, because the mean of its divisors is an integer number (25083135).

Almost surely, 2^100302109 is an apocalyptic number.

It is an amenable number.

100302109 is a deficient number, since it is larger than the sum of its proper divisors (30431).

100302109 is an equidigital number, since it uses as much as digits as its factorization.

100302109 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30430.

The product of its (nonzero) digits is 54, while the sum is 16.

The square root of 100302109 is about 10015.0940584699. The cubic root of 100302109 is about 464.6258353621.

The spelling of 100302109 in words is "one hundred million, three hundred two thousand, one hundred nine".