27731507113 has 2 divisors, whose sum is σ = 27731507114. Its totient is φ = 27731507112.

The previous prime is 27731507101. The next prime is 27731507147. The reversal of 27731507113 is 31170513772.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 25770523024 + 1960984089 = 160532^2 + 44283^2 .

It is a cyclic number.

It is not a de Polignac number, because 27731507113 - 2⁵ = 27731507081 is a prime.

It is not a weakly prime, because it can be changed into another prime (27731508113) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13865753556 + 13865753557.

It is an arithmetic number, because the mean of its divisors is an integer number (13865753557).

Almost surely, 2^27731507113 is an apocalyptic number.

It is an amenable number.

27731507113 is a deficient number, since it is larger than the sum of its proper divisors (1).

27731507113 is an equidigital number, since it uses as much as digits as its factorization.

27731507113 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 30870, while the sum is 37.

The spelling of 27731507113 in words is "twenty-seven billion, seven hundred thirty-one million, five hundred seven thousand, one hundred thirteen".