1123431343 has 16 divisors (see below), whose sum is σ = 1183396032. Its totient is φ = 1064448000.

The previous prime is 1123431341. The next prime is 1123431347. The reversal of 1123431343 is 3431343211.

It is a cyclic number.

It is not a de Polignac number, because 1123431343 - 2¹ = 1123431341 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1123431341) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1752303 + ... + 1752943.

It is an arithmetic number, because the mean of its divisors is an integer number (73962252).

Almost surely, 2^1123431343 is an apocalyptic number.

1123431343 is a deficient number, since it is larger than the sum of its proper divisors (59964689).

1123431343 is a wasteful number, since it uses less digits than its factorization.

1123431343 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1266.

The product of its digits is 2592, while the sum is 25.

The square root of 1123431343 is about 33517.6273474123. The cubic root of 1123431343 is about 1039.5582884448.

Adding to 1123431343 its reverse (3431343211), we get a palindrome (4554774554).

The spelling of 1123431343 in words is "one billion, one hundred twenty-three million, four hundred thirty-one thousand, three hundred forty-three".