213009103 has 2 divisors, whose sum is σ = 213009104. Its totient is φ = 213009102.

The previous prime is 213008987. The next prime is 213009113. The reversal of 213009103 is 301900312.

213009103 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-213009103 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (213009113) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 106504551 + 106504552.

It is an arithmetic number, because the mean of its divisors is an integer number (106504552).

Almost surely, 2^213009103 is an apocalyptic number.

213009103 is a deficient number, since it is larger than the sum of its proper divisors (1).

213009103 is an equidigital number, since it uses as much as digits as its factorization.

213009103 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 162, while the sum is 19.

The square root of 213009103 is about 14594.8313796357. The cubic root of 213009103 is about 597.2177695233.

Adding to 213009103 its reverse (301900312), we get a palindrome (514909415).

It can be divided in two parts, 21300 and 9103, that added together give a palindrome (30403).

The spelling of 213009103 in words is "two hundred thirteen million, nine thousand, one hundred three".