1131045563 has 8 divisors (see below), whose sum is σ = 1162034832. Its totient is φ = 1100078496.

The previous prime is 1131045551. The next prime is 1131045583. The reversal of 1131045563 is 3655401311.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1131045563 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1131045583) 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, 194981 + ... + 200697.

It is an arithmetic number, because the mean of its divisors is an integer number (145254354).

Almost surely, 2^1131045563 is an apocalyptic number.

1131045563 is a deficient number, since it is larger than the sum of its proper divisors (30989269).

1131045563 is an equidigital number, since it uses as much as digits as its factorization.

1131045563 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11101.

The product of its (nonzero) digits is 5400, while the sum is 29.

The square root of 1131045563 is about 33631.0208438578. The cubic root of 1131045563 is about 1041.9015884134.

Adding to 1131045563 its reverse (3655401311), we get a palindrome (4786446874).

The spelling of 1131045563 in words is "one billion, one hundred thirty-one million, forty-five thousand, five hundred sixty-three".