213323051 has 4 divisors (see below), whose sum is σ = 224550600. Its totient is φ = 202095504.

The previous prime is 213323029. The next prime is 213323053. The reversal of 213323051 is 150323312.

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

It is a cyclic number.

It is not a de Polignac number, because 213323051 - 2¹⁸ = 213060907 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (213323053) 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, 5613746 + ... + 5613783.

It is an arithmetic number, because the mean of its divisors is an integer number (56137650).

Almost surely, 2^213323051 is an apocalyptic number.

213323051 is a deficient number, since it is larger than the sum of its proper divisors (11227549).

213323051 is a wasteful number, since it uses less digits than its factorization.

213323051 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11227548.

The product of its (nonzero) digits is 540, while the sum is 20.

The square root of 213323051 is about 14605.5828709436. The cubic root of 213323051 is about 597.5110328664.

Adding to 213323051 its reverse (150323312), we get a palindrome (363646363).

The spelling of 213323051 in words is "two hundred thirteen million, three hundred twenty-three thousand, fifty-one".