231201211103 has 4 divisors (see below), whose sum is σ = 232673830440. Its totient is φ = 229728591768.

The previous prime is 231201211099. The next prime is 231201211123. The reversal of 231201211103 is 301112102132.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 231201211103 - 2² = 231201211099 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (231201211123) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 736309433 + ... + 736309746.

It is an arithmetic number, because the mean of its divisors is an integer number (58168457610).

Almost surely, 2^231201211103 is an apocalyptic number.

231201211103 is a deficient number, since it is larger than the sum of its proper divisors (1472619337).

231201211103 is a wasteful number, since it uses less digits than its factorization.

231201211103 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1472619336.

The product of its (nonzero) digits is 72, while the sum is 17.

Adding to 231201211103 its reverse (301112102132), we get a palindrome (532313313235).

The spelling of 231201211103 in words is "two hundred thirty-one billion, two hundred one million, two hundred eleven thousand, one hundred three".