1112561305 has 8 divisors (see below), whose sum is σ = 1335252744. Its totient is φ = 889929600.

The previous prime is 1112561297. The next prime is 1112561309. The reversal of 1112561305 is 5031652111.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 29888089 + 1082673216 = 5467^2 + 32904^2 .

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

It is not a de Polignac number, because 1112561305 - 2³ = 1112561297 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1112561305.

It is not an unprimeable number, because it can be changed into a prime (1112561309) 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, 63615 + ... + 79195.

It is an arithmetic number, because the mean of its divisors is an integer number (166906593).

Almost surely, 2^1112561305 is an apocalyptic number.

It is an amenable number.

1112561305 is a deficient number, since it is larger than the sum of its proper divisors (222691439).

1112561305 is a wasteful number, since it uses less digits than its factorization.

1112561305 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29867.

The product of its (nonzero) digits is 900, while the sum is 25.

The square root of 1112561305 is about 33355.0791484595. The cubic root of 1112561305 is about 1036.1945817114.

The spelling of 1112561305 in words is "one billion, one hundred twelve million, five hundred sixty-one thousand, three hundred five".