27631313 has 2 divisors, whose sum is σ = 27631314. Its totient is φ = 27631312.

The previous prime is 27631309. The next prime is 27631321. The reversal of 27631313 is 31313672.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 22118209 + 5513104 = 4703^2 + 2348^2 .

It is a cyclic number.

It is not a de Polignac number, because 27631313 - 2² = 27631309 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (27631333) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13815656 + 13815657.

It is an arithmetic number, because the mean of its divisors is an integer number (13815657).

Almost surely, 2^27631313 is an apocalyptic number.

It is an amenable number.

27631313 is a deficient number, since it is larger than the sum of its proper divisors (1).

27631313 is an equidigital number, since it uses as much as digits as its factorization.

27631313 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2268, while the sum is 26.

The square root of 27631313 is about 5256.5495336770. The cubic root of 27631313 is about 302.3202055230.

Adding to 27631313 its reverse (31313672), we get a palindrome (58944985).

The spelling of 27631313 in words is "twenty-seven million, six hundred thirty-one thousand, three hundred thirteen".