213203111103 has 24 divisors (see below), whose sum is σ = 318430569600. Its totient is φ = 137318330880.

The previous prime is 213203111101. The next prime is 213203111113. The reversal of 213203111103 is 301111302312.

213203111103 is a `hidden beast` number, since 21 + 320 + 311 + 1 + 10 + 3 = 666.

It is not a de Polignac number, because 213203111103 - 2¹ = 213203111101 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (213203111101) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 478878 + ... + 809771.

It is an arithmetic number, because the mean of its divisors is an integer number (13267940400).

Almost surely, 2^213203111103 is an apocalyptic number.

213203111103 is a deficient number, since it is larger than the sum of its proper divisors (105227458497).

213203111103 is a wasteful number, since it uses less digits than its factorization.

213203111103 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1289279 (or 1289276 counting only the distinct ones).

The product of its (nonzero) digits is 108, while the sum is 18.

Adding to 213203111103 its reverse (301111302312), we get a palindrome (514314413415).

The spelling of 213203111103 in words is "two hundred thirteen billion, two hundred three million, one hundred eleven thousand, one hundred three".