210030312197 has 2 divisors, whose sum is σ = 210030312198. Its totient is φ = 210030312196.

The previous prime is 210030312157. The next prime is 210030312223. The reversal of 210030312197 is 791213030012.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 209104083841 + 926228356 = 457279^2 + 30434^2 .

It is a cyclic number.

It is not a de Polignac number, because 210030312197 - 2³² = 205735344901 is a prime.

It is a super-2 number, since 2×210030312197² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (210030312157) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 105015156098 + 105015156099.

It is an arithmetic number, because the mean of its divisors is an integer number (105015156099).

Almost surely, 2^210030312197 is an apocalyptic number.

It is an amenable number.

210030312197 is a deficient number, since it is larger than the sum of its proper divisors (1).

210030312197 is an equidigital number, since it uses as much as digits as its factorization.

210030312197 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2268, while the sum is 29.

The spelling of 210030312197 in words is "two hundred ten billion, thirty million, three hundred twelve thousand, one hundred ninety-seven".