328137943 has 4 divisors (see below), whose sum is σ = 375014800. Its totient is φ = 281261088.

The previous prime is 328137917. The next prime is 328137959. The reversal of 328137943 is 349731823.

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-328137943 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 328137896 and 328137905.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (328137643) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 23438418 + ... + 23438431.

It is an arithmetic number, because the mean of its divisors is an integer number (93753700).

Almost surely, 2^328137943 is an apocalyptic number.

328137943 is a deficient number, since it is larger than the sum of its proper divisors (46876857).

328137943 is an equidigital number, since it uses as much as digits as its factorization.

328137943 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 46876856.

The product of its digits is 108864, while the sum is 40.

The square root of 328137943 is about 18114.5781899552. The cubic root of 328137943 is about 689.7401128664.

The spelling of 328137943 in words is "three hundred twenty-eight million, one hundred thirty-seven thousand, nine hundred forty-three".