127308521317 has 2 divisors, whose sum is σ = 127308521318. Its totient is φ = 127308521316.

The previous prime is 127308521311. The next prime is 127308521359. The reversal of 127308521317 is 713125803721.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 70314598561 + 56993922756 = 265169^2 + 238734^2 .

It is a cyclic number.

It is not a de Polignac number, because 127308521317 - 2⁷ = 127308521189 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 127308521317.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (127308521311) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 63654260658 + 63654260659.

It is an arithmetic number, because the mean of its divisors is an integer number (63654260659).

Almost surely, 2^127308521317 is an apocalyptic number.

It is an amenable number.

127308521317 is a deficient number, since it is larger than the sum of its proper divisors (1).

127308521317 is an equidigital number, since it uses as much as digits as its factorization.

127308521317 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 70560, while the sum is 40.

The spelling of 127308521317 in words is "one hundred twenty-seven billion, three hundred eight million, five hundred twenty-one thousand, three hundred seventeen".