213428201 has 16 divisors (see below), whose sum is σ = 258121728. Its totient is φ = 172510800.

The previous prime is 213428177. The next prime is 213428209. The reversal of 213428201 is 102824312.

It is a happy number.

It is not a de Polignac number, because 213428201 - 2¹⁰ = 213427177 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (23).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (213428209) 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, 2096 + ... + 20766.

It is an arithmetic number, because the mean of its divisors is an integer number (16132608).

Almost surely, 2^213428201 is an apocalyptic number.

It is an amenable number.

213428201 is a deficient number, since it is larger than the sum of its proper divisors (44693527).

213428201 is a wasteful number, since it uses less digits than its factorization.

213428201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18772.

The product of its (nonzero) digits is 768, while the sum is 23.

The square root of 213428201 is about 14609.1820784053. The cubic root of 213428201 is about 597.6091906677.

The spelling of 213428201 in words is "two hundred thirteen million, four hundred twenty-eight thousand, two hundred one".