123211011311 has 8 divisors (see below), whose sum is σ = 130566246000. Its totient is φ = 115942821120.

The previous prime is 123211011289. The next prime is 123211011331. The reversal of 123211011311 is 113110112321.

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 123211011311 - 2³⁰ = 122137269487 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 123211011311.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (123211011331) 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, 21758210 + ... + 21763871.

It is an arithmetic number, because the mean of its divisors is an integer number (16320780750).

Almost surely, 2^123211011311 is an apocalyptic number.

123211011311 is a deficient number, since it is larger than the sum of its proper divisors (7355234689).

123211011311 is a wasteful number, since it uses less digits than its factorization.

123211011311 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43522249.

The product of its (nonzero) digits is 36, while the sum is 17.

Adding to 123211011311 its reverse (113110112321), we get a palindrome (236321123632).

It can be divided in two parts, 1232110 and 11311, that added together give a palindrome (1243421).

The spelling of 123211011311 in words is "one hundred twenty-three billion, two hundred eleven million, eleven thousand, three hundred eleven".