27631312 has 10 divisors (see below), whose sum is σ = 53535698. Its totient is φ = 13815648.

The previous prime is 27631309. The next prime is 27631313. The reversal of 27631312 is 21313672.

It can be written as a sum of positive squares in only one way, i.e., 27625536 + 5776 = 5256^2 + 76^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (27631313) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 863463 + ... + 863494.

Almost surely, 2^27631312 is an apocalyptic number.

It is an amenable number.

27631312 is a deficient number, since it is larger than the sum of its proper divisors (25904386).

27631312 is a wasteful number, since it uses less digits than its factorization.

27631312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1726965 (or 1726959 counting only the distinct ones).

The product of its digits is 1512, while the sum is 25.

The square root of 27631312 is about 5256.5494385576. The cubic root of 27631312 is about 302.3202018759.

Adding to 27631312 its reverse (21313672), we get a palindrome (48944984).

The spelling of 27631312 in words is "twenty-seven million, six hundred thirty-one thousand, three hundred twelve".