327894642731 has 4 divisors (see below), whose sum is σ = 328788088992. Its totient is φ = 327001196472.

The previous prime is 327894642707. The next prime is 327894642739. The reversal of 327894642731 is 137246498723.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 137246498723 = 29 ⋅4732637887.

It is a cyclic number.

It is not a de Polignac number, because 327894642731 - 2⁶ = 327894642667 is a prime.

It is a super-2 number, since 2×327894642731² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (327894642739) 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, 446722580 + ... + 446723313.

It is an arithmetic number, because the mean of its divisors is an integer number (82197022248).

Almost surely, 2^327894642731 is an apocalyptic number.

327894642731 is a deficient number, since it is larger than the sum of its proper divisors (893446261).

327894642731 is an equidigital number, since it uses as much as digits as its factorization.

327894642731 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 893446260.

The product of its digits is 12192768, while the sum is 56.

The spelling of 327894642731 in words is "three hundred twenty-seven billion, eight hundred ninety-four million, six hundred forty-two thousand, seven hundred thirty-one".