328940143 has 8 divisors (see below), whose sum is σ = 376051712. Its totient is φ = 281858616.

The previous prime is 328940113. The next prime is 328940147. The reversal of 328940143 is 341049823.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-328940143 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 328940099 and 328940108.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (328940147) 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, 25846 + ... + 36412.

It is an arithmetic number, because the mean of its divisors is an integer number (47006464).

Almost surely, 2^328940143 is an apocalyptic number.

328940143 is a deficient number, since it is larger than the sum of its proper divisors (47111569).

328940143 is a wasteful number, since it uses less digits than its factorization.

328940143 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15021.

The product of its (nonzero) digits is 20736, while the sum is 34.

The square root of 328940143 is about 18136.7070605444. The cubic root of 328940143 is about 690.3017254942.

Adding to 328940143 its reverse (341049823), we get a palindrome (669989966).

The spelling of 328940143 in words is "three hundred twenty-eight million, nine hundred forty thousand, one hundred forty-three".