213223001 has 4 divisors (see below), whose sum is σ = 218423604. Its totient is φ = 208022400.

The previous prime is 213222979. The next prime is 213223009. The reversal of 213223001 is 100322312.

It is a happy number.

213223001 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 8761600 + 204461401 = 2960^2 + 14299^2 .

It is a cyclic number.

It is not a de Polignac number, because 213223001 - 2²² = 209028697 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (213223009) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2600240 + ... + 2600321.

It is an arithmetic number, because the mean of its divisors is an integer number (54605901).

Almost surely, 2^213223001 is an apocalyptic number.

It is an amenable number.

213223001 is a deficient number, since it is larger than the sum of its proper divisors (5200603).

213223001 is an equidigital number, since it uses as much as digits as its factorization.

213223001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5200602.

The product of its (nonzero) digits is 72, while the sum is 14.

The square root of 213223001 is about 14602.1574090954. The cubic root of 213223001 is about 597.4176059772.

Adding to 213223001 its reverse (100322312), we get a palindrome (313545313).

The spelling of 213223001 in words is "two hundred thirteen million, two hundred twenty-three thousand, one".