213421303 has 8 divisors (see below), whose sum is σ = 216273456. Its totient is φ = 210576000.

The previous prime is 213421261. The next prime is 213421321. The reversal of 213421303 is 303124312.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 213421303 - 2²⁵ = 179866871 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (213421603) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 98613 + ... + 100753.

It is an arithmetic number, because the mean of its divisors is an integer number (27034182).

Almost surely, 2^213421303 is an apocalyptic number.

213421303 is a deficient number, since it is larger than the sum of its proper divisors (2852153).

213421303 is a wasteful number, since it uses less digits than its factorization.

213421303 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3425.

The product of its (nonzero) digits is 432, while the sum is 19.

The square root of 213421303 is about 14608.9459920968. The cubic root of 213421303 is about 597.6027523548.

Adding to 213421303 its reverse (303124312), we get a palindrome (516545615).

The spelling of 213421303 in words is "two hundred thirteen million, four hundred twenty-one thousand, three hundred three".