1112103209 has 4 divisors (see below), whose sum is σ = 1270975104. Its totient is φ = 953231316.

The previous prime is 1112103169. The next prime is 1112103217. The reversal of 1112103209 is 9023012111.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1112103209 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1112103259) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 79435937 + ... + 79435950.

It is an arithmetic number, because the mean of its divisors is an integer number (317743776).

Almost surely, 2^1112103209 is an apocalyptic number.

It is an amenable number.

1112103209 is a deficient number, since it is larger than the sum of its proper divisors (158871895).

1112103209 is an equidigital number, since it uses as much as digits as its factorization.

1112103209 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 158871894.

The product of its (nonzero) digits is 108, while the sum is 20.

The square root of 1112103209 is about 33348.2114812774. The cubic root of 1112103209 is about 1036.0523448281.

The spelling of 1112103209 in words is "one billion, one hundred twelve million, one hundred three thousand, two hundred nine".