1123504312 has 32 divisors (see below), whose sum is σ = 2490530400. Its totient is φ = 464897664.

The previous prime is 1123504303. The next prime is 1123504411. The reversal of 1123504312 is 2134053211.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 344283 + ... + 347530.

It is an arithmetic number, because the mean of its divisors is an integer number (77829075).

Almost surely, 2^1123504312 is an apocalyptic number.

It is an amenable number.

1123504312 is an abundant number, since it is smaller than the sum of its proper divisors (1367026088).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1123504312 is a wasteful number, since it uses less digits than its factorization.

1123504312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 691855 (or 691851 counting only the distinct ones).

The product of its (nonzero) digits is 720, while the sum is 22.

The square root of 1123504312 is about 33518.7158465237. The cubic root of 1123504312 is about 1039.5807950528.

Adding to 1123504312 its reverse (2134053211), we get a palindrome (3257557523).

The spelling of 1123504312 in words is "one billion, one hundred twenty-three million, five hundred four thousand, three hundred twelve".