210328408247 has 4 divisors (see below), whose sum is σ = 210329480520. Its totient is φ = 210327335976.

The previous prime is 210328408229. The next prime is 210328408267. The reversal of 210328408247 is 742804823012.

210328408247 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 210328408247 - 2¹² = 210328404151 is a prime.

It is a super-2 number, since 2×210328408247² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (210328408267) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 148472 + ... + 665357.

It is an arithmetic number, because the mean of its divisors is an integer number (52582370130).

Almost surely, 2^210328408247 is an apocalyptic number.

210328408247 is a deficient number, since it is larger than the sum of its proper divisors (1072273).

210328408247 is an equidigital number, since it uses as much as digits as its factorization.

210328408247 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1072272.

The product of its (nonzero) digits is 172032, while the sum is 41.

The spelling of 210328408247 in words is "two hundred ten billion, three hundred twenty-eight million, four hundred eight thousand, two hundred forty-seven".