27312019 has 4 divisors (see below), whose sum is σ = 31213744. Its totient is φ = 23410296.

The previous prime is 27312011. The next prime is 27312083. The reversal of 27312019 is 91021372.

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

It is not a de Polignac number, because 27312019 - 2³ = 27312011 is a prime.

It is a super-2 number, since 2×27312019² = 1491892763712722, 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 = 27311984 and 27312002.

It is not an unprimeable number, because it can be changed into a prime (27312011) 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, 1950852 + ... + 1950865.

It is an arithmetic number, because the mean of its divisors is an integer number (7803436).

Almost surely, 2^27312019 is an apocalyptic number.

27312019 is a deficient number, since it is larger than the sum of its proper divisors (3901725).

27312019 is an equidigital number, since it uses as much as digits as its factorization.

27312019 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3901724.

The product of its (nonzero) digits is 756, while the sum is 25.

The square root of 27312019 is about 5226.0902211883. The cubic root of 27312019 is about 301.1512027164.

The spelling of 27312019 in words is "twenty-seven million, three hundred twelve thousand, nineteen".