213272161 has 8 divisors (see below), whose sum is σ = 214441344. Its totient is φ = 212106960.

The previous prime is 213272083. The next prime is 213272173. The reversal of 213272161 is 161272312.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 213272161 - 2⁹ = 213271649 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (213273161) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 190375 + ... + 191491.

It is an arithmetic number, because the mean of its divisors is an integer number (26805168).

Almost surely, 2^213272161 is an apocalyptic number.

It is an amenable number.

213272161 is a deficient number, since it is larger than the sum of its proper divisors (1169183).

213272161 is a wasteful number, since it uses less digits than its factorization.

213272161 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1991.

The product of its digits is 1008, while the sum is 25.

The square root of 213272161 is about 14603.8406249863. The cubic root of 213272161 is about 597.4635153343.

The spelling of 213272161 in words is "two hundred thirteen million, two hundred seventy-two thousand, one hundred sixty-one".