27711531311 has 4 divisors (see below), whose sum is σ = 27712594800. Its totient is φ = 27710467824.

The previous prime is 27711531251. The next prime is 27711531313. The reversal of 27711531311 is 11313511772.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-27711531311 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 (27711531313) 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, 491651 + ... + 545108.

It is an arithmetic number, because the mean of its divisors is an integer number (6928148700).

Almost surely, 2^27711531311 is an apocalyptic number.

27711531311 is a deficient number, since it is larger than the sum of its proper divisors (1063489).

27711531311 is a wasteful number, since it uses less digits than its factorization.

27711531311 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1063488.

The product of its digits is 4410, while the sum is 32.

The spelling of 27711531311 in words is "twenty-seven billion, seven hundred eleven million, five hundred thirty-one thousand, three hundred eleven".