211231103 has 8 divisors (see below), whose sum is σ = 233381088. Its totient is φ = 190161664.

The previous prime is 211231091. The next prime is 211231109. The reversal of 211231103 is 301132112.

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 211231103 - 2²⁴ = 194453887 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 (211231109) 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, 269726 + ... + 270507.

It is an arithmetic number, because the mean of its divisors is an integer number (29172636).

Almost surely, 2^211231103 is an apocalyptic number.

211231103 is a gapful number since it is divisible by the number (23) formed by its first and last digit.

211231103 is a deficient number, since it is larger than the sum of its proper divisors (22149985).

211231103 is a wasteful number, since it uses less digits than its factorization.

211231103 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 540273.

The product of its (nonzero) digits is 36, while the sum is 14.

The square root of 211231103 is about 14533.7917626475. The cubic root of 211231103 is about 595.5514535339.

Adding to 211231103 its reverse (301132112), we get a palindrome (512363215).

The spelling of 211231103 in words is "two hundred eleven million, two hundred thirty-one thousand, one hundred three".