327631478443 has 4 divisors (see below), whose sum is σ = 327845478328. Its totient is φ = 327417478560.

The previous prime is 327631478431. The next prime is 327631478509. The reversal of 327631478443 is 344874136723.

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

It is a cyclic number.

It is not a de Polignac number, because 327631478443 - 2¹³ = 327631470251 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (327631478743) 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, 106997646 + ... + 107000707.

It is an arithmetic number, because the mean of its divisors is an integer number (81961369582).

Almost surely, 2^327631478443 is an apocalyptic number.

327631478443 is a deficient number, since it is larger than the sum of its proper divisors (213999885).

327631478443 is a wasteful number, since it uses less digits than its factorization.

327631478443 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 213999884.

The product of its digits is 8128512, while the sum is 52.

The spelling of 327631478443 in words is "three hundred twenty-seven billion, six hundred thirty-one million, four hundred seventy-eight thousand, four hundred forty-three".