403213223 has 4 divisors (see below), whose sum is σ = 460815120. Its totient is φ = 345611328.

The previous prime is 403213219. The next prime is 403213243. The reversal of 403213223 is 322312304.

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 403213223 - 2² = 403213219 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 403213195 and 403213204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (403213243) 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, 28800938 + ... + 28800951.

It is an arithmetic number, because the mean of its divisors is an integer number (115203780).

Almost surely, 2^403213223 is an apocalyptic number.

403213223 is a deficient number, since it is larger than the sum of its proper divisors (57601897).

403213223 is an equidigital number, since it uses as much as digits as its factorization.

403213223 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 57601896.

The product of its (nonzero) digits is 864, while the sum is 20.

The square root of 403213223 is about 20080.1698946996. The cubic root of 403213223 is about 738.7739760676.

Adding to 403213223 its reverse (322312304), we get a palindrome (725525527).

The spelling of 403213223 in words is "four hundred three million, two hundred thirteen thousand, two hundred twenty-three".