31128028027 has 2 divisors, whose sum is σ = 31128028028. Its totient is φ = 31128028026.

The previous prime is 31128027991. The next prime is 31128028049. The reversal of 31128028027 is 72082082113.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 31128028027 - 2¹¹ = 31128025979 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 31128027983 and 31128028001.

It is not a weakly prime, because it can be changed into another prime (31128028067) 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, 15564014013 + 15564014014.

It is an arithmetic number, because the mean of its divisors is an integer number (15564014014).

Almost surely, 2^31128028027 is an apocalyptic number.

31128028027 is a deficient number, since it is larger than the sum of its proper divisors (1).

31128028027 is an equidigital number, since it uses as much as digits as its factorization.

31128028027 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 10752, while the sum is 34.

The spelling of 31128028027 in words is "thirty-one billion, one hundred twenty-eight million, twenty-eight thousand, twenty-seven".