1120731217 has 4 divisors (see below), whose sum is σ = 1125381796. Its totient is φ = 1116080640.

The previous prime is 1120731193. The next prime is 1120731229. The reversal of 1120731217 is 7121370211.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 628956241 + 491774976 = 25079^2 + 22176^2 .

It is a de Polignac number, because none of the positive numbers 2^k-1120731217 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1120731191 and 1120731200.

It is not an unprimeable number, because it can be changed into a prime (1120731257) 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, 2324928 + ... + 2325409.

It is an arithmetic number, because the mean of its divisors is an integer number (281345449).

Almost surely, 2^1120731217 is an apocalyptic number.

It is an amenable number.

1120731217 is a deficient number, since it is larger than the sum of its proper divisors (4650579).

1120731217 is an equidigital number, since it uses as much as digits as its factorization.

1120731217 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4650578.

The product of its (nonzero) digits is 588, while the sum is 25.

The square root of 1120731217 is about 33477.3239223209. The cubic root of 1120731217 is about 1038.7247735830.

It can be divided in two parts, 11207 and 31217, that added together give a palindrome (42424).

The spelling of 1120731217 in words is "one billion, one hundred twenty million, seven hundred thirty-one thousand, two hundred seventeen".