213403323 has 16 divisors (see below), whose sum is σ = 327672576. Its totient is φ = 121012320.

The previous prime is 213403321. The next prime is 213403357. The reversal of 213403323 is 323304312.

It is not a de Polignac number, because 213403323 - 2¹ = 213403321 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a self number, because there is not a number n which added to its sum of digits gives 213403323.

It is not an unprimeable number, because it can be changed into a prime (213403321) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 36036 + ... + 41537.

It is an arithmetic number, because the mean of its divisors is an integer number (20479536).

Almost surely, 2^213403323 is an apocalyptic number.

213403323 is a deficient number, since it is larger than the sum of its proper divisors (114269253).

213403323 is a wasteful number, since it uses less digits than its factorization.

213403323 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 77714.

The product of its (nonzero) digits is 1296, while the sum is 21.

The square root of 213403323 is about 14608.3306027759. The cubic root of 213403323 is about 597.5859699014.

Adding to 213403323 its reverse (323304312), we get a palindrome (536707635).

The spelling of 213403323 in words is "two hundred thirteen million, four hundred three thousand, three hundred twenty-three".