12320143 has 8 divisors (see below), whose sum is σ = 13547520. Its totient is φ = 11110680.

The previous prime is 12320141. The next prime is 12320159. The reversal of 12320143 is 34102321.

It is a happy number.

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 12320143 - 2¹ = 12320141 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 (12320141) 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, 3013 + ... + 5806.

It is an arithmetic number, because the mean of its divisors is an integer number (1693440).

Almost surely, 2^12320143 is an apocalyptic number.

12320143 is a deficient number, since it is larger than the sum of its proper divisors (1227377).

12320143 is a wasteful number, since it uses less digits than its factorization.

12320143 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8957.

The product of its (nonzero) digits is 144, while the sum is 16.

The square root of 12320143 is about 3510.0061253508. The cubic root of 12320143 is about 230.9609636504.

Adding to 12320143 its reverse (34102321), we get a palindrome (46422464).

The spelling of 12320143 in words is "twelve million, three hundred twenty thousand, one hundred forty-three".