111131213013 has 12 divisors (see below), whose sum is σ = 160535464128. Its totient is φ = 74081659560.

The previous prime is 111131212993. The next prime is 111131213027. The reversal of 111131213013 is 310312131111.

It is not a de Polignac number, because 111131213013 - 2⁵ = 111131212981 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (111131213513) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 361995 + ... + 594392.

It is an arithmetic number, because the mean of its divisors is an integer number (13377955344).

Almost surely, 2^111131213013 is an apocalyptic number.

It is an amenable number.

111131213013 is a deficient number, since it is larger than the sum of its proper divisors (49404251115).

111131213013 is a wasteful number, since it uses less digits than its factorization.

111131213013 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 969304 (or 969301 counting only the distinct ones).

The product of its (nonzero) digits is 54, while the sum is 18.

Adding to 111131213013 its reverse (310312131111), we get a palindrome (421443344124).

The spelling of 111131213013 in words is "one hundred eleven billion, one hundred thirty-one million, two hundred thirteen thousand, thirteen".