830728385317 has 2 divisors, whose sum is σ = 830728385318. Its totient is φ = 830728385316.

The previous prime is 830728385237. The next prime is 830728385321. The reversal of 830728385317 is 713583827038.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 619509093921 + 211219291396 = 787089^2 + 459586^2 .

It is a cyclic number.

It is not a de Polignac number, because 830728385317 - 2³¹ = 828580901669 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (830728389317) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 415364192658 + 415364192659.

It is an arithmetic number, because the mean of its divisors is an integer number (415364192659).

Almost surely, 2^830728385317 is an apocalyptic number.

It is an amenable number.

830728385317 is a deficient number, since it is larger than the sum of its proper divisors (1).

830728385317 is an equidigital number, since it uses as much as digits as its factorization.

830728385317 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 6773760, while the sum is 55.

The spelling of 830728385317 in words is "eight hundred thirty billion, seven hundred twenty-eight million, three hundred eighty-five thousand, three hundred seventeen".