1112131109 has 12 divisors (see below), whose sum is σ = 1207002852. Its totient is φ = 1021155840.

The previous prime is 1112131081. The next prime is 1112131133. The reversal of 1112131109 is 9011312111.

It is a happy number.

It can be written as a sum of positive squares in 6 ways, for example, as 396408100 + 715723009 = 19910^2 + 26753^2 .

It is not a de Polignac number, because 1112131109 - 2²⁸ = 843695653 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 (1112134109) 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, 9119 + ... + 48035.

It is an arithmetic number, because the mean of its divisors is an integer number (100583571).

Almost surely, 2^1112131109 is an apocalyptic number.

It is an amenable number.

1112131109 is a deficient number, since it is larger than the sum of its proper divisors (94871743).

1112131109 is an equidigital number, since it uses as much as digits as its factorization.

1112131109 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39016 (or 38975 counting only the distinct ones).

The product of its (nonzero) digits is 54, while the sum is 20.

The square root of 1112131109 is about 33348.6297919420. The cubic root of 1112131109 is about 1036.0610087778.

The spelling of 1112131109 in words is "one billion, one hundred twelve million, one hundred thirty-one thousand, one hundred nine".