1123523999 has 12 divisors (see below), whose sum is σ = 1288164816. Its totient is φ = 976090752.

The previous prime is 1123523977. The next prime is 1123524007. The reversal of 1123523999 is 9993253211.

It is not a de Polignac number, because 1123523999 - 2²⁴ = 1106746783 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 (1123523959) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 192659 + ... + 198404.

It is an arithmetic number, because the mean of its divisors is an integer number (107347068).

Almost surely, 2^1123523999 is an apocalyptic number.

1123523999 is a deficient number, since it is larger than the sum of its proper divisors (164640817).

1123523999 is a wasteful number, since it uses less digits than its factorization.

1123523999 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 391106 (or 391093 counting only the distinct ones).

The product of its digits is 131220, while the sum is 44.

The square root of 1123523999 is about 33519.0095169890. The cubic root of 1123523999 is about 1039.5868671576.

The spelling of 1123523999 in words is "one billion, one hundred twenty-three million, five hundred twenty-three thousand, nine hundred ninety-nine".