327871381 has 4 divisors (see below), whose sum is σ = 327907872. Its totient is φ = 327834892.

The previous prime is 327871339. The next prime is 327871387. The reversal of 327871381 is 183178723.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 327871381 - 2⁹ = 327870869 is a prime.

It is a super-2 number, since 2×327871381² = 214999284957694322, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (327871387) 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, 5766 + ... + 26248.

It is an arithmetic number, because the mean of its divisors is an integer number (81976968).

Almost surely, 2^327871381 is an apocalyptic number.

It is an amenable number.

327871381 is a deficient number, since it is larger than the sum of its proper divisors (36491).

327871381 is a wasteful number, since it uses less digits than its factorization.

327871381 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36490.

The product of its digits is 56448, while the sum is 40.

The square root of 327871381 is about 18107.2190299891. The cubic root of 327871381 is about 689.5532927439.

The spelling of 327871381 in words is "three hundred twenty-seven million, eight hundred seventy-one thousand, three hundred eighty-one".