1123831172 has 24 divisors (see below), whose sum is σ = 2093920920. Its totient is φ = 525934080.

The previous prime is 1123831153. The next prime is 1123831183. The reversal of 1123831172 is 2711383211.

It can be written as a sum of positive squares in 4 ways, for example, as 25969216 + 1097861956 = 5096^2 + 33134^2 .

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, 33347 + ... + 57962.

It is an arithmetic number, because the mean of its divisors is an integer number (87246705).

Almost surely, 2^1123831172 is an apocalyptic number.

It is an amenable number.

1123831172 is a deficient number, since it is larger than the sum of its proper divisors (970089748).

1123831172 is a wasteful number, since it uses less digits than its factorization.

1123831172 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 91511 (or 91509 counting only the distinct ones).

The product of its digits is 2016, while the sum is 29.

The square root of 1123831172 is about 33523.5912753989. The cubic root of 1123831172 is about 1039.6816000158.

The spelling of 1123831172 in words is "one billion, one hundred twenty-three million, eight hundred thirty-one thousand, one hundred seventy-two".