213320001 has 4 divisors (see below), whose sum is σ = 284426672. Its totient is φ = 142213332.

The previous prime is 213319949. The next prime is 213320017. The reversal of 213320001 is 100023312.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 213320001 - 2¹⁰ = 213318977 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (213320801) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 35553331 + ... + 35553336.

It is an arithmetic number, because the mean of its divisors is an integer number (71106668).

Almost surely, 2^213320001 is an apocalyptic number.

It is an amenable number.

213320001 is a deficient number, since it is larger than the sum of its proper divisors (71106671).

213320001 is an equidigital number, since it uses as much as digits as its factorization.

213320001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 71106670.

The product of its (nonzero) digits is 36, while the sum is 12.

The square root of 213320001 is about 14605.4784584415. The cubic root of 213320001 is about 597.5081852021.

Adding to 213320001 its reverse (100023312), we get a palindrome (313343313).

The spelling of 213320001 in words is "two hundred thirteen million, three hundred twenty thousand, one".