1123244431 has 4 divisors (see below), whose sum is σ = 1124600200. Its totient is φ = 1121888664.

The previous prime is 1123244401. The next prime is 1123244453. The reversal of 1123244431 is 1344423211.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1344423211 = 3229 ⋅416359.

It is a cyclic number.

It is not a de Polignac number, because 1123244431 - 2¹¹ = 1123242383 is a prime.

It is a super-2 number, since 2×1123244431² = 2523356103545027522, 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 = 1123244396 and 1123244405.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1123244401) 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, 676641 + ... + 678298.

It is an arithmetic number, because the mean of its divisors is an integer number (281150050).

Almost surely, 2^1123244431 is an apocalyptic number.

1123244431 is a deficient number, since it is larger than the sum of its proper divisors (1355769).

1123244431 is an equidigital number, since it uses as much as digits as its factorization.

1123244431 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1355768.

The product of its digits is 2304, while the sum is 25.

The square root of 1123244431 is about 33514.8389672396. The cubic root of 1123244431 is about 1039.5006327347.

Adding to 1123244431 its reverse (1344423211), we get a palindrome (2467667642).

The spelling of 1123244431 in words is "one billion, one hundred twenty-three million, two hundred forty-four thousand, four hundred thirty-one".