27311493 has 32 divisors (see below), whose sum is σ = 42831360. Its totient is φ = 15301440.

The previous prime is 27311467. The next prime is 27311497. The reversal of 27311493 is 39411372.

It is not a de Polignac number, because 27311493 - 2⁵ = 27311461 is a prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 27311493.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (27311497) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 26455 + ... + 27467.

It is an arithmetic number, because the mean of its divisors is an integer number (1338480).

Almost surely, 2^27311493 is an apocalyptic number.

It is an amenable number.

27311493 is a deficient number, since it is larger than the sum of its proper divisors (15519867).

27311493 is a wasteful number, since it uses less digits than its factorization.

27311493 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1089.

The product of its digits is 4536, while the sum is 30.

The square root of 27311493 is about 5226.0398965182. The cubic root of 27311493 is about 301.1492694216.

It can be divided in two parts, 2731 and 1493, that added together give a palindrome (4224).

The spelling of 27311493 in words is "twenty-seven million, three hundred eleven thousand, four hundred ninety-three".