504131403 has 4 divisors (see below), whose sum is σ = 672175208. Its totient is φ = 336087600.

The previous prime is 504131399. The next prime is 504131429. The reversal of 504131403 is 304131405.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 504131403 - 2² = 504131399 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 504131403.

It is not an unprimeable number, because it can be changed into a prime (504131473) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 84021898 + ... + 84021903.

It is an arithmetic number, because the mean of its divisors is an integer number (168043802).

Almost surely, 2^504131403 is an apocalyptic number.

504131403 is a deficient number, since it is larger than the sum of its proper divisors (168043805).

504131403 is a wasteful number, since it uses less digits than its factorization.

504131403 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 168043804.

The product of its (nonzero) digits is 720, while the sum is 21.

The square root of 504131403 is about 22452.8707073283. The cubic root of 504131403 is about 795.8805969524.

Adding to 504131403 its reverse (304131405), we get a palindrome (808262808).

The spelling of 504131403 in words is "five hundred four million, one hundred thirty-one thousand, four hundred three".