1123323131 has 8 divisors (see below), whose sum is σ = 1287982080. Its totient is φ = 959710248.

The previous prime is 1123323119. The next prime is 1123323133. The reversal of 1123323131 is 1313233211.

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

It is not a de Polignac number, because 1123323131 - 2⁶ = 1123323067 is a prime.

It is a super-2 number, since 2×1123323131² = 2523709713279286322, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1123323133) 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, 259211 + ... + 263508.

It is an arithmetic number, because the mean of its divisors is an integer number (160997760).

Almost surely, 2^1123323131 is an apocalyptic number.

1123323131 is a deficient number, since it is larger than the sum of its proper divisors (164658949).

1123323131 is an equidigital number, since it uses as much as digits as its factorization.

1123323131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 523033.

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

The square root of 1123323131 is about 33516.0130534645. The cubic root of 1123323131 is about 1039.5249096676.

Adding to 1123323131 its reverse (1313233211), we get a palindrome (2436556342).

The spelling of 1123323131 in words is "one billion, one hundred twenty-three million, three hundred twenty-three thousand, one hundred thirty-one".