830212387 has 2 divisors, whose sum is σ = 830212388. Its totient is φ = 830212386.

The previous prime is 830212351. The next prime is 830212417. The reversal of 830212387 is 783212038.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-830212387 is a prime.

It is not a weakly prime, because it can be changed into another prime (830212307) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 415106193 + 415106194.

It is an arithmetic number, because the mean of its divisors is an integer number (415106194).

Almost surely, 2^830212387 is an apocalyptic number.

830212387 is a deficient number, since it is larger than the sum of its proper divisors (1).

830212387 is an equidigital number, since it uses as much as digits as its factorization.

830212387 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 16128, while the sum is 34.

The square root of 830212387 is about 28813.4063761993. The cubic root of 830212387 is about 939.8597900879.

The spelling of 830212387 in words is "eight hundred thirty million, two hundred twelve thousand, three hundred eighty-seven".