11156143 has 8 divisors (see below), whose sum is σ = 11360000. Its totient is φ = 10954008.

The previous prime is 11156137. The next prime is 11156147. The reversal of 11156143 is 34165111.

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 11156143 - 2⁵ = 11156111 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 (11156147) 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, 22108 + ... + 22606.

It is an arithmetic number, because the mean of its divisors is an integer number (1420000).

Almost surely, 2^11156143 is an apocalyptic number.

11156143 is a deficient number, since it is larger than the sum of its proper divisors (203857).

11156143 is an equidigital number, since it uses as much as digits as its factorization.

11156143 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 861.

The product of its digits is 360, while the sum is 22.

The square root of 11156143 is about 3340.0812864360. The cubic root of 11156143 is about 223.4453686537.

The spelling of 11156143 in words is "eleven million, one hundred fifty-six thousand, one hundred forty-three".