1123242231 has 8 divisors (see below), whose sum is σ = 1502101744. Its totient is φ = 746605440.

The previous prime is 1123242199. The next prime is 1123242257. The reversal of 1123242231 is 1322423211.

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

It is not a de Polignac number, because 1123242231 - 2⁵ = 1123242199 is a prime.

It is a super-2 number, since 2×1123242231² = 2523346219003714722, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1123242198 and 1123242207.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1123242271) 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 7 ways as a sum of consecutive naturals, for example, 554500 + ... + 556521.

It is an arithmetic number, because the mean of its divisors is an integer number (187762718).

Almost surely, 2^1123242231 is an apocalyptic number.

1123242231 is a deficient number, since it is larger than the sum of its proper divisors (378859513).

1123242231 is a wasteful number, since it uses less digits than its factorization.

1123242231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1111361.

The product of its digits is 576, while the sum is 21.

The square root of 1123242231 is about 33514.8061459409. The cubic root of 1123242231 is about 1039.4999540747.

Adding to 1123242231 its reverse (1322423211), we get a palindrome (2445665442).

The spelling of 1123242231 in words is "one billion, one hundred twenty-three million, two hundred forty-two thousand, two hundred thirty-one".