211405204103 has 8 divisors (see below), whose sum is σ = 218237613696. Its totient is φ = 204573600000.

The previous prime is 211405204081. The next prime is 211405204141. The reversal of 211405204103 is 301402504112.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 211405204103 - 2³⁰ = 210331462279 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (211405207103) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 356603 + ... + 741603.

It is an arithmetic number, because the mean of its divisors is an integer number (27279701712).

Almost surely, 2^211405204103 is an apocalyptic number.

211405204103 is a deficient number, since it is larger than the sum of its proper divisors (6832409593).

211405204103 is a wasteful number, since it uses less digits than its factorization.

211405204103 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 402745.

The product of its (nonzero) digits is 960, while the sum is 23.

Adding to 211405204103 its reverse (301402504112), we get a palindrome (512807708215).

The spelling of 211405204103 in words is "two hundred eleven billion, four hundred five million, two hundred four thousand, one hundred three".