100320405109 has 8 divisors (see below), whose sum is σ = 102772094040. Its totient is φ = 97868947200.

The previous prime is 100320405103. The next prime is 100320405167. The reversal of 100320405109 is 901504023001.

It can be written as a sum of positive squares in 4 ways, for example, as 8114046084 + 92206359025 = 90078^2 + 303655^2 .

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-100320405109 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (100320405103) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1102647 + ... + 1190155.

It is an arithmetic number, because the mean of its divisors is an integer number (12846511755).

Almost surely, 2^100320405109 is an apocalyptic number.

It is an amenable number.

100320405109 is a deficient number, since it is larger than the sum of its proper divisors (2451688931).

100320405109 is an equidigital number, since it uses as much as digits as its factorization.

100320405109 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 115511.

The product of its (nonzero) digits is 1080, while the sum is 25.

The spelling of 100320405109 in words is "one hundred billion, three hundred twenty million, four hundred five thousand, one hundred nine".