830806321 has 2 divisors, whose sum is σ = 830806322. Its totient is φ = 830806320.

The previous prime is 830806283. The next prime is 830806351. The reversal of 830806321 is 123608038.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 779526400 + 51279921 = 27920^2 + 7161^2 .

It is a cyclic number.

It is not a de Polignac number, because 830806321 - 2⁹ = 830805809 is a prime.

It is not a weakly prime, because it can be changed into another prime (830806351) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 415403160 + 415403161.

It is an arithmetic number, because the mean of its divisors is an integer number (415403161).

Almost surely, 2^830806321 is an apocalyptic number.

It is an amenable number.

830806321 is a deficient number, since it is larger than the sum of its proper divisors (1).

830806321 is an equidigital number, since it uses as much as digits as its factorization.

830806321 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 6912, while the sum is 31.

The square root of 830806321 is about 28823.7110900037. The cubic root of 830806321 is about 940.0838619160.

It can be divided in two parts, 83080 and 6321, that added together give a square (89401 = 299²).

The spelling of 830806321 in words is "eight hundred thirty million, eight hundred six thousand, three hundred twenty-one".