12111031311 has 8 divisors (see below), whose sum is σ = 16296189360. Its totient is φ = 7999947072.

The previous prime is 12111031297. The next prime is 12111031337. The reversal of 12111031311 is 11313011121.

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

It is not a de Polignac number, because 12111031311 - 2⁵ = 12111031279 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12111035311) 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, 18518070 + ... + 18518723.

It is an arithmetic number, because the mean of its divisors is an integer number (2037023670).

Almost surely, 2^12111031311 is an apocalyptic number.

12111031311 is a deficient number, since it is larger than the sum of its proper divisors (4185158049).

12111031311 is a wasteful number, since it uses less digits than its factorization.

12111031311 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37036905.

The product of its (nonzero) digits is 18, while the sum is 15.

Adding to 12111031311 its reverse (11313011121), we get a palindrome (23424042432).

The spelling of 12111031311 in words is "twelve billion, one hundred eleven million, thirty-one thousand, three hundred eleven".