100320113 has 4 divisors (see below), whose sum is σ = 100513188. Its totient is φ = 100127040.

The previous prime is 100320109. The next prime is 100320127. The reversal of 100320113 is 311023001.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 60730849 + 39589264 = 7793^2 + 6292^2 .

It is a cyclic number.

It is not a de Polignac number, because 100320113 - 2² = 100320109 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 100320094 and 100320103.

It is not an unprimeable number, because it can be changed into a prime (100320313) 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, 95756 + ... + 96797.

It is an arithmetic number, because the mean of its divisors is an integer number (25128297).

Almost surely, 2^100320113 is an apocalyptic number.

It is an amenable number.

100320113 is a deficient number, since it is larger than the sum of its proper divisors (193075).

100320113 is an equidigital number, since it uses as much as digits as its factorization.

100320113 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 193074.

The product of its (nonzero) digits is 18, while the sum is 11.

The square root of 100320113 is about 10015.9928614192. The cubic root of 100320113 is about 464.6536334585.

Adding to 100320113 its reverse (311023001), we get a palindrome (411343114).

The spelling of 100320113 in words is "one hundred million, three hundred twenty thousand, one hundred thirteen".