1123442431 has 8 divisors (see below), whose sum is σ = 1204884720. Its totient is φ = 1044231552.

The previous prime is 1123442413. The next prime is 1123442459. The reversal of 1123442431 is 1342443211.

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

It is a cyclic number.

It is not a de Polignac number, because 1123442431 - 2⁷ = 1123442303 is a prime.

It is a super-2 number, since 2×1123442431² = 2524245791542379522, 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 = 1123442396 and 1123442405.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1123442731) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 556810 + ... + 558823.

It is an arithmetic number, because the mean of its divisors is an integer number (150610590).

Almost surely, 2^1123442431 is an apocalyptic number.

1123442431 is a deficient number, since it is larger than the sum of its proper divisors (81442289).

1123442431 is a wasteful number, since it uses less digits than its factorization.

1123442431 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1115705.

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

The square root of 1123442431 is about 33517.7927525068. The cubic root of 1123442431 is about 1039.5617084979.

Adding to 1123442431 its reverse (1342443211), we get a palindrome (2465885642).

The spelling of 1123442431 in words is "one billion, one hundred twenty-three million, four hundred forty-two thousand, four hundred thirty-one".