213130850197 has 2 divisors, whose sum is σ = 213130850198. Its totient is φ = 213130850196.

The previous prime is 213130850189. The next prime is 213130850201. The reversal of 213130850197 is 791058031312.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 163920526641 + 49210323556 = 404871^2 + 221834^2 .

It is a cyclic number.

It is not a de Polignac number, because 213130850197 - 2³ = 213130850189 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (213130850497) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 106565425098 + 106565425099.

It is an arithmetic number, because the mean of its divisors is an integer number (106565425099).

Almost surely, 2^213130850197 is an apocalyptic number.

It is an amenable number.

213130850197 is a deficient number, since it is larger than the sum of its proper divisors (1).

213130850197 is an equidigital number, since it uses as much as digits as its factorization.

213130850197 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 45360, while the sum is 40.

The spelling of 213130850197 in words is "two hundred thirteen billion, one hundred thirty million, eight hundred fifty thousand, one hundred ninety-seven".