213056890187 has 2 divisors, whose sum is σ = 213056890188. Its totient is φ = 213056890186.

The previous prime is 213056890169. The next prime is 213056890213. The reversal of 213056890187 is 781098650312.

213056890187 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-213056890187 is a prime.

It is not a weakly prime, because it can be changed into another prime (213056890147) 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 as a sum of consecutive naturals, namely, 106528445093 + 106528445094.

It is an arithmetic number, because the mean of its divisors is an integer number (106528445094).

Almost surely, 2^213056890187 is an apocalyptic number.

213056890187 is a deficient number, since it is larger than the sum of its proper divisors (1).

213056890187 is an equidigital number, since it uses as much as digits as its factorization.

213056890187 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 725760, while the sum is 50.

The spelling of 213056890187 in words is "two hundred thirteen billion, fifty-six million, eight hundred ninety thousand, one hundred eighty-seven".