27531423 has 6 divisors (see below), whose sum is σ = 39767624. Its totient is φ = 18354276.

The previous prime is 27531407. The next prime is 27531431. The reversal of 27531423 is 32413572.

It is not a de Polignac number, because 27531423 - 2⁴ = 27531407 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 (27531443) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1529515 + ... + 1529532.

Almost surely, 2^27531423 is an apocalyptic number.

27531423 is a deficient number, since it is larger than the sum of its proper divisors (12236201).

27531423 is a wasteful number, since it uses less digits than its factorization.

27531423 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3059053 (or 3059050 counting only the distinct ones).

The product of its digits is 5040, while the sum is 27.

The square root of 27531423 is about 5247.0394509666. The cubic root of 27531423 is about 301.9554595658.

Adding to 27531423 its reverse (32413572), we get a palindrome (59944995).

The spelling of 27531423 in words is "twenty-seven million, five hundred thirty-one thousand, four hundred twenty-three".