1143312 has 20 divisors (see below), whose sum is σ = 2953680. Its totient is φ = 381088.

The previous prime is 1143299. The next prime is 1143341. The reversal of 1143312 is 2133411.

It is a nude number because it is divisible by every one of its digits.

It is a junction number, because it is equal to n+sod(n) for n = 1143291 and 1143300.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11862 + ... + 11957.

It is an arithmetic number, because the mean of its divisors is an integer number (147684).

2^1143312 is an apocalyptic number.

1143312 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1143312 is an abundant number, since it is smaller than the sum of its proper divisors (1810368).

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

1143312 is a wasteful number, since it uses less digits than its factorization.

1143312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23830 (or 23824 counting only the distinct ones).

The product of its digits is 72, while the sum is 15.

The square root of 1143312 is about 1069.2576864348. The cubic root of 1143312 is about 104.5654603864.

Adding to 1143312 its reverse (2133411), we get a palindrome (3276723).

Subtracting 1143312 from its reverse (2133411), we obtain a palindrome (990099).

The spelling of 1143312 in words is "one million, one hundred forty-three thousand, three hundred twelve".