213891205 has 8 divisors (see below), whose sum is σ = 280003104. Its totient is φ = 155557200.

The previous prime is 213891187. The next prime is 213891233. The reversal of 213891205 is 502198312.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 213891205 - 2⁵ = 213891173 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1944411 + ... + 1944520.

It is an arithmetic number, because the mean of its divisors is an integer number (35000388).

Almost surely, 2^213891205 is an apocalyptic number.

It is an amenable number.

213891205 is a deficient number, since it is larger than the sum of its proper divisors (66111899).

213891205 is a wasteful number, since it uses less digits than its factorization.

213891205 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3888947.

The product of its (nonzero) digits is 4320, while the sum is 31.

The square root of 213891205 is about 14625.0198290464. The cubic root of 213891205 is about 598.0410230132.

The spelling of 213891205 in words is "two hundred thirteen million, eight hundred ninety-one thousand, two hundred five".