27312919 has 12 divisors (see below), whose sum is σ = 28567728. Its totient is φ = 26107200.

The previous prime is 27312917. The next prime is 27312973. The reversal of 27312919 is 91921372.

It is a happy number.

It is not a de Polignac number, because 27312919 - 2¹ = 27312917 is a prime.

It is a super-2 number, since 2×27312919² = 1491991088601122, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (27312911) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 97059 + ... + 97339.

It is an arithmetic number, because the mean of its divisors is an integer number (2380644).

Almost surely, 2^27312919 is an apocalyptic number.

27312919 is a deficient number, since it is larger than the sum of its proper divisors (1254809).

27312919 is an equidigital number, since it uses as much as digits as its factorization.

27312919 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 426 (or 389 counting only the distinct ones).

The product of its digits is 6804, while the sum is 34.

The square root of 27312919 is about 5226.1763269144. The cubic root of 27312919 is about 301.1545105776.

The spelling of 27312919 in words is "twenty-seven million, three hundred twelve thousand, nine hundred nineteen".