320132143 has 4 divisors (see below), whose sum is σ = 320281240. Its totient is φ = 319983048.

The previous prime is 320132129. The next prime is 320132149. The reversal of 320132143 is 341231023.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-320132143 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 320132143.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (320132149) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 71280 + ... + 75637.

It is an arithmetic number, because the mean of its divisors is an integer number (80070310).

Almost surely, 2^320132143 is an apocalyptic number.

320132143 is a deficient number, since it is larger than the sum of its proper divisors (149097).

320132143 is a wasteful number, since it uses less digits than its factorization.

320132143 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 149096.

The product of its (nonzero) digits is 432, while the sum is 19.

The square root of 320132143 is about 17892.2369479056. The cubic root of 320132143 is about 684.0845162771.

Adding to 320132143 its reverse (341231023), we get a palindrome (661363166).

It can be divided in two parts, 3201 and 32143, that added together give a square (35344 = 188²).

The spelling of 320132143 in words is "three hundred twenty million, one hundred thirty-two thousand, one hundred forty-three".