31680127277 has 2 divisors, whose sum is σ = 31680127278. Its totient is φ = 31680127276.

The previous prime is 31680127201. The next prime is 31680127291. The reversal of 31680127277 is 77272108613.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 30585112996 + 1095014281 = 174886^2 + 33091^2 .

It is a cyclic number.

It is not a de Polignac number, because 31680127277 - 2³² = 27385159981 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (31680127177) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15840063638 + 15840063639.

It is an arithmetic number, because the mean of its divisors is an integer number (15840063639).

Almost surely, 2^31680127277 is an apocalyptic number.

It is an amenable number.

31680127277 is a deficient number, since it is larger than the sum of its proper divisors (1).

31680127277 is an equidigital number, since it uses as much as digits as its factorization.

31680127277 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 197568, while the sum is 44.

The spelling of 31680127277 in words is "thirty-one billion, six hundred eighty million, one hundred twenty-seven thousand, two hundred seventy-seven".