11303123211 has 40 divisors (see below), whose sum is σ = 17268926400. Its totient is φ = 7365945600.

The previous prime is 11303123189. The next prime is 11303123239. The reversal of 11303123211 is 11232130311.

11303123211 is a `hidden beast` number, since 1 + 1 + 30 + 312 + 321 + 1 = 666.

It is not a de Polignac number, because 11303123211 - 2⁵ = 11303123179 is a prime.

It is not an unprimeable number, because it can be changed into a prime (11303123911) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 637555 + ... + 655043.

It is an arithmetic number, because the mean of its divisors is an integer number (431723160).

Almost surely, 2^11303123211 is an apocalyptic number.

11303123211 is a deficient number, since it is larger than the sum of its proper divisors (5965803189).

11303123211 is a wasteful number, since it uses less digits than its factorization.

11303123211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17681 (or 17672 counting only the distinct ones).

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

Adding to 11303123211 its reverse (11232130311), we get a palindrome (22535253522).

The spelling of 11303123211 in words is "eleven billion, three hundred three million, one hundred twenty-three thousand, two hundred eleven".