11530231143 has 8 divisors (see below), whose sum is σ = 15663710448. Its totient is φ = 7541786304.

The previous prime is 11530231099. The next prime is 11530231157. The reversal of 11530231143 is 34113203511.

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

It is not a de Polignac number, because 11530231143 - 2²⁴ = 11513453927 is a prime.

It is a super-2 number, since 2×11530231143² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11530231183) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 36258430 + ... + 36258747.

It is an arithmetic number, because the mean of its divisors is an integer number (1957963806).

Almost surely, 2^11530231143 is an apocalyptic number.

11530231143 is a deficient number, since it is larger than the sum of its proper divisors (4133479305).

11530231143 is an equidigital number, since it uses as much as digits as its factorization.

11530231143 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 72517233.

The product of its (nonzero) digits is 1080, while the sum is 24.

Adding to 11530231143 its reverse (34113203511), we get a palindrome (45643434654).

The spelling of 11530231143 in words is "eleven billion, five hundred thirty million, two hundred thirty-one thousand, one hundred forty-three".