423220403 has 8 divisors (see below), whose sum is σ = 443091600. Its totient is φ = 403701088.

The previous prime is 423220381. The next prime is 423220411. The reversal of 423220403 is 304022324.

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 423220403 - 2²⁸ = 154784947 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (423220703) 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, 85508 + ... + 90321.

It is an arithmetic number, because the mean of its divisors is an integer number (55386450).

Almost surely, 2^423220403 is an apocalyptic number.

423220403 is a deficient number, since it is larger than the sum of its proper divisors (19871197).

423220403 is a wasteful number, since it uses less digits than its factorization.

423220403 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 175941.

The product of its (nonzero) digits is 1152, while the sum is 20.

The square root of 423220403 is about 20572.3212837054. The cubic root of 423220403 is about 750.7964298185.

Adding to 423220403 its reverse (304022324), we get a palindrome (727242727).

The spelling of 423220403 in words is "four hundred twenty-three million, two hundred twenty thousand, four hundred three".