1143181 has 8 divisors (see below), whose sum is σ = 1257984. Its totient is φ = 1032240.

The previous prime is 1143167. The next prime is 1143193. The reversal of 1143181 is 1813411.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1143181 - 2⁷ = 1143053 is a prime.

It is a super-2 number, since 2×1143181² = 2613725597522, which contains 22 as substring.

It is an Ulam number.

1143181 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1143101) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 325 + ... + 1546.

It is an arithmetic number, because the mean of its divisors is an integer number (157248).

2^1143181 is an apocalyptic number.

It is an amenable number.

1143181 is a deficient number, since it is larger than the sum of its proper divisors (114803).

1143181 is a wasteful number, since it uses less digits than its factorization.

1143181 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1931.

The product of its digits is 96, while the sum is 19.

The square root of 1143181 is about 1069.1964272293. The cubic root of 1143181 is about 104.5614665513.

Adding to 1143181 its reverse (1813411), we get a palindrome (2956592).

The spelling of 1143181 in words is "one million, one hundred forty-three thousand, one hundred eighty-one".