213999163 has 16 divisors (see below), whose sum is σ = 250301440. Its totient is φ = 179172000.

The previous prime is 213999161. The next prime is 213999173. The reversal of 213999163 is 361999312.

It is not a de Polignac number, because 213999163 - 2¹ = 213999161 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (213999161) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 62818 + ... + 66136.

It is an arithmetic number, because the mean of its divisors is an integer number (15643840).

Almost surely, 2^213999163 is an apocalyptic number.

213999163 is a deficient number, since it is larger than the sum of its proper divisors (36302277).

213999163 is a wasteful number, since it uses less digits than its factorization.

213999163 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3538.

The product of its digits is 78732, while the sum is 43.

The square root of 213999163 is about 14628.7102302288. The cubic root of 213999163 is about 598.1416231499.

The spelling of 213999163 in words is "two hundred thirteen million, nine hundred ninety-nine thousand, one hundred sixty-three".