11670143 has 4 divisors (see below), whose sum is σ = 12356640. Its totient is φ = 10983648.

The previous prime is 11670137. The next prime is 11670149. The reversal of 11670143 is 34107611.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (11670137) and next prime (11670149).

It is a cyclic number.

It is not a de Polignac number, because 11670143 - 2⁸ = 11669887 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 (11670149) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 343223 + ... + 343256.

It is an arithmetic number, because the mean of its divisors is an integer number (3089160).

Almost surely, 2^11670143 is an apocalyptic number.

11670143 is a deficient number, since it is larger than the sum of its proper divisors (686497).

11670143 is an equidigital number, since it uses as much as digits as its factorization.

11670143 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 686496.

The product of its (nonzero) digits is 504, while the sum is 23.

The square root of 11670143 is about 3416.1591005104. The cubic root of 11670143 is about 226.8255952397.

Adding to 11670143 its reverse (34107611), we get a palindrome (45777754).

The spelling of 11670143 in words is "eleven million, six hundred seventy thousand, one hundred forty-three".