128481713 has 2 divisors, whose sum is σ = 128481714. Its totient is φ = 128481712.

The previous prime is 128481707. The next prime is 128481739. The reversal of 128481713 is 317184821.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 123387664 + 5094049 = 11108^2 + 2257^2 .

It is an emirp because it is prime and its reverse (317184821) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 128481713 - 2¹² = 128477617 is a prime.

It is not a weakly prime, because it can be changed into another prime (128481313) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 64240856 + 64240857.

It is an arithmetic number, because the mean of its divisors is an integer number (64240857).

Almost surely, 2^128481713 is an apocalyptic number.

It is an amenable number.

128481713 is a deficient number, since it is larger than the sum of its proper divisors (1).

128481713 is an equidigital number, since it uses as much as digits as its factorization.

128481713 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 10752, while the sum is 35.

The square root of 128481713 is about 11334.9774150635. The cubic root of 128481713 is about 504.5998372274.

The spelling of 128481713 in words is "one hundred twenty-eight million, four hundred eighty-one thousand, seven hundred thirteen".