11130323231 has 4 divisors (see below), whose sum is σ = 11614250352. Its totient is φ = 10646396112.

The previous prime is 11130323227. The next prime is 11130323233. The reversal of 11130323231 is 13232303111.

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

It is a cyclic number.

It is not a de Polignac number, because 11130323231 - 2² = 11130323227 is a prime.

It is a super-2 number, since 2×11130323231² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11130323233) 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, 241963526 + ... + 241963571.

It is an arithmetic number, because the mean of its divisors is an integer number (2903562588).

Almost surely, 2^11130323231 is an apocalyptic number.

11130323231 is a deficient number, since it is larger than the sum of its proper divisors (483927121).

11130323231 is an equidigital number, since it uses as much as digits as its factorization.

11130323231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 483927120.

The product of its (nonzero) digits is 324, while the sum is 20.

Adding to 11130323231 its reverse (13232303111), we get a palindrome (24362626342).

The spelling of 11130323231 in words is "eleven billion, one hundred thirty million, three hundred twenty-three thousand, two hundred thirty-one".