27135931 has 4 divisors (see below), whose sum is σ = 27156600. Its totient is φ = 27115264.

The previous prime is 27135919. The next prime is 27135959. The reversal of 27135931 is 13953172.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 27135931 - 2⁷ = 27135803 is a prime.

It is a super-2 number, since 2×27135931² = 1472717502473522, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 27135893 and 27135902.

It is not an unprimeable number, because it can be changed into a prime (27135431) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8221 + ... + 11038.

It is an arithmetic number, because the mean of its divisors is an integer number (6789150).

Almost surely, 2^27135931 is an apocalyptic number.

27135931 is a deficient number, since it is larger than the sum of its proper divisors (20669).

27135931 is a wasteful number, since it uses less digits than its factorization.

27135931 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20668.

The product of its digits is 5670, while the sum is 31.

The square root of 27135931 is about 5209.2159678785. The cubic root of 27135931 is about 300.5026056365.

The spelling of 27135931 in words is "twenty-seven million, one hundred thirty-five thousand, nine hundred thirty-one".