1327631 has 2 divisors, whose sum is σ = 1327632. Its totient is φ = 1327630.

The previous prime is 1327619. The next prime is 1327673. The reversal of 1327631 is 1367231.

It is a happy number.

It is a weak prime.

It is an emirp because it is prime and its reverse (1367231) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1327631 - 2¹⁰ = 1326607 is a prime.

It is a super-2 number, since 2×1327631² = 3525208144322, which contains 22 as substring.

It is a Chen prime.

It is an Ulam number.

It is equal to p₁₀₁₉₈₄ and since 1327631 and 101984 have the same sum of digits, it is a Honaker prime.

It is a junction number, because it is equal to n+sod(n) for n = 1327597 and 1327606.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1327231) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 663815 + 663816.

It is an arithmetic number, because the mean of its divisors is an integer number (663816).

2^1327631 is an apocalyptic number.

1327631 is a deficient number, since it is larger than the sum of its proper divisors (1).

1327631 is an equidigital number, since it uses as much as digits as its factorization.

1327631 is an evil number, because the sum of its binary digits is even.

The product of its digits is 756, while the sum is 23.

The square root of 1327631 is about 1152.2287099357. The cubic root of 1327631 is about 109.9071116662.

The spelling of 1327631 in words is "one million, three hundred twenty-seven thousand, six hundred thirty-one".