220320503 has 16 divisors (see below), whose sum is σ = 246177792. Its totient is φ = 195804000.

The previous prime is 220320487. The next prime is 220320509. The reversal of 220320503 is 305023022.

It is a cyclic number.

It is not a de Polignac number, because 220320503 - 2⁴ = 220320487 is a prime.

It is a super-2 number, since 2×220320503² = 97082248084346018, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (220320509) 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, 83738 + ... + 86328.

It is an arithmetic number, because the mean of its divisors is an integer number (15386112).

Almost surely, 2^220320503 is an apocalyptic number.

220320503 is a deficient number, since it is larger than the sum of its proper divisors (25857289).

220320503 is a wasteful number, since it uses less digits than its factorization.

220320503 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2846.

The product of its (nonzero) digits is 360, while the sum is 17.

The square root of 220320503 is about 14843.1971960222. The cubic root of 220320503 is about 603.9740853683.

Adding to 220320503 its reverse (305023022), we get a palindrome (525343525).

The spelling of 220320503 in words is "two hundred twenty million, three hundred twenty thousand, five hundred three".