27831013 has 8 divisors (see below), whose sum is σ = 31840128. Its totient is φ = 23830224.

The previous prime is 27831007. The next prime is 27831043. The reversal of 27831013 is 31013872.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 27831013 - 2⁹ = 27830501 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (27831043) 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 in 7 ways as a sum of consecutive naturals, for example, 9120 + ... + 11782.

It is an arithmetic number, because the mean of its divisors is an integer number (3980016).

Almost surely, 2^27831013 is an apocalyptic number.

It is an amenable number.

27831013 is a deficient number, since it is larger than the sum of its proper divisors (4009115).

27831013 is a wasteful number, since it uses less digits than its factorization.

27831013 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4163.

The product of its (nonzero) digits is 1008, while the sum is 25.

The square root of 27831013 is about 5275.5106861801. The cubic root of 27831013 is about 303.0467783145.

Adding to 27831013 its reverse (31013872), we get a palindrome (58844885).

The spelling of 27831013 in words is "twenty-seven million, eight hundred thirty-one thousand, thirteen".