30503223 has 10 divisors (see below), whose sum is σ = 45566664. Its totient is φ = 20335428.

The previous prime is 30503197. The next prime is 30503251. The reversal of 30503223 is 32230503.

It is not a de Polignac number, because 30503223 - 2⁶ = 30503159 is a prime.

It is a super-2 number, since 2×30503223² = 1860893226775458, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 30503196 and 30503205.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30503623) by changing a digit.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 188211 + ... + 188372.

Almost surely, 2^30503223 is an apocalyptic number.

30503223 is a deficient number, since it is larger than the sum of its proper divisors (15063441).

30503223 is an equidigital number, since it uses as much as digits as its factorization.

30503223 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 376595 (or 376586 counting only the distinct ones).

The product of its (nonzero) digits is 540, while the sum is 18.

The square root of 30503223 is about 5522.9722975948. The cubic root of 30503223 is about 312.4509934885.

Adding to 30503223 its reverse (32230503), we get a palindrome (62733726).

The spelling of 30503223 in words is "thirty million, five hundred three thousand, two hundred twenty-three".