105203155103 has 4 divisors (see below), whose sum is σ = 106644294288. Its totient is φ = 103762015920.

The previous prime is 105203155049. The next prime is 105203155111. The reversal of 105203155103 is 301551302501.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 105203155103 - 2¹⁸ = 105202892959 is a prime.

It is a super-2 number, since 2×105203155103² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (105203155303) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 720569483 + ... + 720569628.

It is an arithmetic number, because the mean of its divisors is an integer number (26661073572).

Almost surely, 2^105203155103 is an apocalyptic number.

105203155103 is a deficient number, since it is larger than the sum of its proper divisors (1441139185).

105203155103 is an equidigital number, since it uses as much as digits as its factorization.

105203155103 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1441139184.

The product of its (nonzero) digits is 2250, while the sum is 26.

Adding to 105203155103 its reverse (301551302501), we get a palindrome (406754457604).

The spelling of 105203155103 in words is "one hundred five billion, two hundred three million, one hundred fifty-five thousand, one hundred three".