111331213 has 8 divisors (see below), whose sum is σ = 127333440. Its totient is φ = 95353440.

The previous prime is 111331177. The next prime is 111331223. The reversal of 111331213 is 312133111.

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

It is not a de Polignac number, because 111331213 - 2²⁵ = 77776781 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (111331223) 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, 4998 + ... + 15736.

It is an arithmetic number, because the mean of its divisors is an integer number (15916680).

Almost surely, 2^111331213 is an apocalyptic number.

It is an amenable number.

111331213 is a deficient number, since it is larger than the sum of its proper divisors (16002227).

111331213 is a wasteful number, since it uses less digits than its factorization.

111331213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12227.

The product of its digits is 54, while the sum is 16.

The square root of 111331213 is about 10551.3607179359. The cubic root of 111331213 is about 481.0670892455.

Adding to 111331213 its reverse (312133111), we get a palindrome (423464324).

The spelling of 111331213 in words is "one hundred eleven million, three hundred thirty-one thousand, two hundred thirteen".