100345009 has 2 divisors, whose sum is σ = 100345010. Its totient is φ = 100345008.

The previous prime is 100345001. The next prime is 100345013. The reversal of 100345009 is 900543001.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 74304400 + 26040609 = 8620^2 + 5103^2 .

It is a cyclic number.

It is not a de Polignac number, because 100345009 - 2³ = 100345001 is a prime.

It is not a weakly prime, because it can be changed into another prime (100345001) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 50172504 + 50172505.

It is an arithmetic number, because the mean of its divisors is an integer number (50172505).

Almost surely, 2^100345009 is an apocalyptic number.

It is an amenable number.

100345009 is a deficient number, since it is larger than the sum of its proper divisors (1).

100345009 is an equidigital number, since it uses as much as digits as its factorization.

100345009 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 540, while the sum is 22.

The square root of 100345009 is about 10017.2355967103. The cubic root of 100345009 is about 464.6920672937.

The spelling of 100345009 in words is "one hundred million, three hundred forty-five thousand, nine".