27312231 has 8 divisors (see below), whose sum is σ = 36825840. Its totient is φ = 18003392.

The previous prime is 27312223. The next prime is 27312269. The reversal of 27312231 is 13221372.

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 27312231 - 2³ = 27312223 is a prime.

It is a super-2 number, since 2×27312231² = 1491915924394722, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 27312198 and 27312207.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (27312281) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 50880 + ... + 51413.

It is an arithmetic number, because the mean of its divisors is an integer number (4603230).

Almost surely, 2^27312231 is an apocalyptic number.

27312231 is a deficient number, since it is larger than the sum of its proper divisors (9513609).

27312231 is a wasteful number, since it uses less digits than its factorization.

27312231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 102385.

The product of its digits is 504, while the sum is 21.

The square root of 27312231 is about 5226.1105039982. The cubic root of 27312231 is about 301.1519819080.

The spelling of 27312231 in words is "twenty-seven million, three hundred twelve thousand, two hundred thirty-one".