387328243 has 4 divisors (see below), whose sum is σ = 407713960. Its totient is φ = 366942528.

The previous prime is 387328241. The next prime is 387328297. The reversal of 387328243 is 342823783.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 342823783 = 19 ⋅18043357.

It is a cyclic number.

It is not a de Polignac number, because 387328243 - 2¹ = 387328241 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 387328196 and 387328205.

It is not an unprimeable number, because it can be changed into a prime (387328241) 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, 10192830 + ... + 10192867.

It is an arithmetic number, because the mean of its divisors is an integer number (101928490).

Almost surely, 2^387328243 is an apocalyptic number.

387328243 is a deficient number, since it is larger than the sum of its proper divisors (20385717).

387328243 is a wasteful number, since it uses less digits than its factorization.

387328243 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20385716.

The product of its digits is 193536, while the sum is 40.

The square root of 387328243 is about 19680.6565693322. The cubic root of 387328243 is about 728.9421363661.

The spelling of 387328243 in words is "three hundred eighty-seven million, three hundred twenty-eight thousand, two hundred forty-three".