1123320231 has 48 divisors (see below), whose sum is σ = 1852381440. Its totient is φ = 674593920.

The previous prime is 1123320229. The next prime is 1123320239. The reversal of 1123320231 is 1320233211.

1123320231 is a `hidden beast` number, since 112 + 3 + 320 + 231 = 666.

It is not a de Polignac number, because 1123320231 - 2¹ = 1123320229 is a prime.

It is a super-2 number, since 2×1123320231² = 2523696682747786722, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1123320239) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 300190 + ... + 303908.

It is an arithmetic number, because the mean of its divisors is an integer number (38591280).

Almost surely, 2^1123320231 is an apocalyptic number.

1123320231 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

1123320231 is a deficient number, since it is larger than the sum of its proper divisors (729061209).

1123320231 is a wasteful number, since it uses less digits than its factorization.

1123320231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3858 (or 3846 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 18.

The square root of 1123320231 is about 33515.9697905342. The cubic root of 1123320231 is about 1039.5240151121.

Adding to 1123320231 its reverse (1320233211), we get a palindrome (2443553442).

The spelling of 1123320231 in words is "one billion, one hundred twenty-three million, three hundred twenty thousand, two hundred thirty-one".