105203245203 has 32 divisors (see below), whose sum is σ = 178330014720. Its totient is φ = 60045900480.

The previous prime is 105203245153. The next prime is 105203245229. The reversal of 105203245203 is 302542302501.

It is a happy number.

105203245203 is a `hidden beast` number, since 1 + 0 + 5 + 203 + 2 + 452 + 0 + 3 = 666.

It is not a de Polignac number, because 105203245203 - 2²⁸ = 104934809747 is a prime.

It is a super-2 number, since 2×105203245203² (a number of 23 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (105203245253) 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 31 ways as a sum of consecutive naturals, for example, 162783 + ... + 486728.

It is an arithmetic number, because the mean of its divisors is an integer number (5572812960).

Almost surely, 2^105203245203 is an apocalyptic number.

105203245203 is a deficient number, since it is larger than the sum of its proper divisors (73126769517).

105203245203 is an equidigital number, since it uses as much as digits as its factorization.

105203245203 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 650384 (or 650378 counting only the distinct ones).

The product of its (nonzero) digits is 7200, while the sum is 27.

Adding to 105203245203 its reverse (302542302501), we get a palindrome (407745547704).

The spelling of 105203245203 in words is "one hundred five billion, two hundred three million, two hundred forty-five thousand, two hundred three".