27731842319 has 2 divisors, whose sum is σ = 27731842320. Its totient is φ = 27731842318.

The previous prime is 27731842309. The next prime is 27731842339. The reversal of 27731842319 is 91324813772.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 27731842319 - 2²⁸ = 27463406863 is a prime.

It is a super-2 number, since 2×27731842319² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (27731842309) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13865921159 + 13865921160.

It is an arithmetic number, because the mean of its divisors is an integer number (13865921160).

Almost surely, 2^27731842319 is an apocalyptic number.

27731842319 is a deficient number, since it is larger than the sum of its proper divisors (1).

27731842319 is an equidigital number, since it uses as much as digits as its factorization.

27731842319 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 508032, while the sum is 47.

The spelling of 27731842319 in words is "twenty-seven billion, seven hundred thirty-one million, eight hundred forty-two thousand, three hundred nineteen".