27431413 has 4 divisors (see below), whose sum is σ = 27465568. Its totient is φ = 27397260.

The previous prime is 27431389. The next prime is 27431423. The reversal of 27431413 is 31413472.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 27431413 - 2⁵ = 27431381 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 (27431423) 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 3 ways as a sum of consecutive naturals, for example, 15843 + ... + 17488.

It is an arithmetic number, because the mean of its divisors is an integer number (6866392).

Almost surely, 2^27431413 is an apocalyptic number.

It is an amenable number.

27431413 is a deficient number, since it is larger than the sum of its proper divisors (34155).

27431413 is an equidigital number, since it uses as much as digits as its factorization.

27431413 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34154.

The product of its digits is 2016, while the sum is 25.

The square root of 27431413 is about 5237.5006443914. The cubic root of 27431413 is about 301.5893905146.

Adding to 27431413 its reverse (31413472), we get a palindrome (58844885).

The spelling of 27431413 in words is "twenty-seven million, four hundred thirty-one thousand, four hundred thirteen".