105213103 has 2 divisors, whose sum is σ = 105213104. Its totient is φ = 105213102.

The previous prime is 105213071. The next prime is 105213133. The reversal of 105213103 is 301312501.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 105213103 - 2⁵ = 105213071 is a prime.

It is a super-2 number, since 2×105213103² = 22139594085777218, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (105213133) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 52606551 + 52606552.

It is an arithmetic number, because the mean of its divisors is an integer number (52606552).

Almost surely, 2^105213103 is an apocalyptic number.

105213103 is a deficient number, since it is larger than the sum of its proper divisors (1).

105213103 is an equidigital number, since it uses as much as digits as its factorization.

105213103 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 90, while the sum is 16.

The square root of 105213103 is about 10257.3438569641. The cubic root of 105213103 is about 472.0883425923.

Adding to 105213103 its reverse (301312501), we get a palindrome (406525604).

The spelling of 105213103 in words is "one hundred five million, two hundred thirteen thousand, one hundred three".