213310433 has 4 divisors (see below), whose sum is σ = 243783360. Its totient is φ = 182837508.

The previous prime is 213310423. The next prime is 213310451. The reversal of 213310433 is 334013312.

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 213310433 - 2⁴ = 213310417 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (213310403) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 15236453 + ... + 15236466.

It is an arithmetic number, because the mean of its divisors is an integer number (60945840).

Almost surely, 2^213310433 is an apocalyptic number.

It is an amenable number.

213310433 is a deficient number, since it is larger than the sum of its proper divisors (30472927).

213310433 is an equidigital number, since it uses as much as digits as its factorization.

213310433 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30472926.

The product of its (nonzero) digits is 648, while the sum is 20.

The square root of 213310433 is about 14605.1509064439. The cubic root of 213310433 is about 597.4992517629.

Adding to 213310433 its reverse (334013312), we get a palindrome (547323745).

The spelling of 213310433 in words is "two hundred thirteen million, three hundred ten thousand, four hundred thirty-three".