327431647 has 2 divisors, whose sum is σ = 327431648. Its totient is φ = 327431646.

The previous prime is 327431609. The next prime is 327431653. The reversal of 327431647 is 746134723.

It is a strong prime.

It is an emirp because it is prime and its reverse (746134723) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 327431647 - 2¹⁵ = 327398879 is a prime.

It is a super-2 number, since 2×327431647² = 214422966914265218, which contains 22 as substring.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (327431677) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 163715823 + 163715824.

It is an arithmetic number, because the mean of its divisors is an integer number (163715824).

Almost surely, 2^327431647 is an apocalyptic number.

327431647 is a deficient number, since it is larger than the sum of its proper divisors (1).

327431647 is an equidigital number, since it uses as much as digits as its factorization.

327431647 is an evil number, because the sum of its binary digits is even.

The product of its digits is 84672, while the sum is 37.

The square root of 327431647 is about 18095.0724508083. The cubic root of 327431647 is about 689.2448835081.

The spelling of 327431647 in words is "three hundred twenty-seven million, four hundred thirty-one thousand, six hundred forty-seven".