503122403 has 16 divisors (see below), whose sum is σ = 591951360. Its totient is φ = 418654656.

The previous prime is 503122397. The next prime is 503122469. The reversal of 503122403 is 304221305.

It is a happy number.

It is a de Polignac number, because none of the positive numbers 2^k-503122403 is a prime.

It is not an unprimeable number, because it can be changed into a prime (503122003) 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, 45263 + ... + 55271.

It is an arithmetic number, because the mean of its divisors is an integer number (36996960).

Almost surely, 2^503122403 is an apocalyptic number.

503122403 is a deficient number, since it is larger than the sum of its proper divisors (88828957).

503122403 is a wasteful number, since it uses less digits than its factorization.

503122403 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10226.

The product of its (nonzero) digits is 720, while the sum is 20.

The square root of 503122403 is about 22430.3901660225. The cubic root of 503122403 is about 795.3492673111.

Adding to 503122403 its reverse (304221305), we get a palindrome (807343708).

The spelling of 503122403 in words is "five hundred three million, one hundred twenty-two thousand, four hundred three".