100203113 has 4 divisors (see below), whose sum is σ = 100234068. Its totient is φ = 100172160.

The previous prime is 100203073. The next prime is 100203119. The reversal of 100203113 is 311302001.

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 37982569 + 62220544 = 6163^2 + 7888^2 .

It is a cyclic number.

It is not a de Polignac number, because 100203113 - 2²⁴ = 83425897 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 100203094 and 100203103.

It is not an unprimeable number, because it can be changed into a prime (100203119) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9968 + ... + 17313.

It is an arithmetic number, because the mean of its divisors is an integer number (25058517).

Almost surely, 2^100203113 is an apocalyptic number.

It is an amenable number.

100203113 is a deficient number, since it is larger than the sum of its proper divisors (30955).

100203113 is an equidigital number, since it uses as much as digits as its factorization.

100203113 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30954.

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

The square root of 100203113 is about 10010.1504983691. The cubic root of 100203113 is about 464.4729265139.

Adding to 100203113 its reverse (311302001), we get a palindrome (411505114).

The spelling of 100203113 in words is "one hundred million, two hundred three thousand, one hundred thirteen".