1112111231 has 8 divisors (see below), whose sum is σ = 1386528384. Its totient is φ = 866580120.

The previous prime is 1112111201. The next prime is 1112111239. The reversal of 1112111231 is 1321112111.

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

It is a de Polignac number, because none of the positive numbers 2^k-1112111231 is a prime.

It is a super-2 number, since 2×1112111231² = 2473582780232670722, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1112111239) 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, 7221425 + ... + 7221578.

It is an arithmetic number, because the mean of its divisors is an integer number (173316048).

Almost surely, 2^1112111231 is an apocalyptic number.

1112111231 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

1112111231 is a deficient number, since it is larger than the sum of its proper divisors (274417153).

1112111231 is a wasteful number, since it uses less digits than its factorization.

1112111231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14443021.

The product of its digits is 12, while the sum is 14.

The square root of 1112111231 is about 33348.3317573758. The cubic root of 1112111231 is about 1036.0548359614.

Adding to 1112111231 its reverse (1321112111), we get a palindrome (2433223342).

The spelling of 1112111231 in words is "one billion, one hundred twelve million, one hundred eleven thousand, two hundred thirty-one".