223212403 has 8 divisors (see below), whose sum is σ = 225509328. Its totient is φ = 220921344.

The previous prime is 223212349. The next prime is 223212419. The reversal of 223212403 is 304212322.

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 223212403 - 2¹³ = 223204211 is a prime.

It is a super-3 number, since 3×223212403³ (a number of 26 digits) contains 333 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (223212103) 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, 145800 + ... + 147322.

It is an arithmetic number, because the mean of its divisors is an integer number (28188666).

Almost surely, 2^223212403 is an apocalyptic number.

223212403 is a deficient number, since it is larger than the sum of its proper divisors (2296925).

223212403 is a wasteful number, since it uses less digits than its factorization.

223212403 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2933.

The product of its (nonzero) digits is 576, while the sum is 19.

The square root of 223212403 is about 14940.2946088757. The cubic root of 223212403 is about 606.6051703085.

Adding to 223212403 its reverse (304212322), we get a palindrome (527424725).

The spelling of 223212403 in words is "two hundred twenty-three million, two hundred twelve thousand, four hundred three".