1181323 has 12 divisors (see below), whose sum is σ = 1400224. Its totient is φ = 990000.

The previous prime is 1181321. The next prime is 1181329. The reversal of 1181323 is 3231811.

It is not a de Polignac number, because 1181323 - 2¹ = 1181321 is a prime.

It is a hoax number, since the sum of its digits (19) coincides with the sum of the digits of its distinct prime factors.

It is an Ulam number.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1181323.

It is not an unprimeable number, because it can be changed into a prime (1181321) 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, 1198 + ... + 1948.

2^1181323 is an apocalyptic number.

1181323 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

1181323 is a deficient number, since it is larger than the sum of its proper divisors (218901).

1181323 is a wasteful number, since it uses less digits than its factorization.

1181323 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 786 (or 775 counting only the distinct ones).

The product of its digits is 144, while the sum is 19.

The square root of 1181323 is about 1086.8868386359. The cubic root of 1181323 is about 105.7116585141.

It can be divided in two parts, 118 and 1323, that added together give a palindrome (1441).

The spelling of 1181323 in words is "one million, one hundred eighty-one thousand, three hundred twenty-three".