1130543021 has 4 divisors (see below), whose sum is σ = 1132964352. Its totient is φ = 1128121692.

The previous prime is 1130542991. The next prime is 1130543023. The reversal of 1130543021 is 1203450311.

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 not a de Polignac number, because 1130543021 - 2⁶ = 1130542957 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1130542984 and 1130543002.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1130543023) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1209965 + ... + 1210898.

It is an arithmetic number, because the mean of its divisors is an integer number (283241088).

Almost surely, 2^1130543021 is an apocalyptic number.

It is an amenable number.

1130543021 is a deficient number, since it is larger than the sum of its proper divisors (2421331).

1130543021 is an equidigital number, since it uses as much as digits as its factorization.

1130543021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2421330.

The product of its (nonzero) digits is 360, while the sum is 20.

The square root of 1130543021 is about 33623.5486080812. The cubic root of 1130543021 is about 1041.7472542609.

Adding to 1130543021 its reverse (1203450311), we get a palindrome (2333993332).

The spelling of 1130543021 in words is "one billion, one hundred thirty million, five hundred forty-three thousand, twenty-one".