1123431104 has 14 divisors (see below), whose sum is σ = 2229308724. Its totient is φ = 561715520.

The previous prime is 1123431079. The next prime is 1123431109. The reversal of 1123431104 is 4011343211.

It is not an unprimeable number, because it can be changed into a prime (1123431109) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8776742 + ... + 8776869.

Almost surely, 2^1123431104 is an apocalyptic number.

It is an amenable number.

1123431104 is a deficient number, since it is larger than the sum of its proper divisors (1105877620).

1123431104 is an equidigital number, since it uses as much as digits as its factorization.

1123431104 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17553623 (or 17553613 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 20.

The square root of 1123431104 is about 33517.6237821239. The cubic root of 1123431104 is about 1039.5582147259.

Adding to 1123431104 its reverse (4011343211), we get a palindrome (5134774315).

The spelling of 1123431104 in words is "one billion, one hundred twenty-three million, four hundred thirty-one thousand, one hundred four".