503423131 has 2 divisors, whose sum is σ = 503423132. Its totient is φ = 503423130.

The previous prime is 503423117. The next prime is 503423143. The reversal of 503423131 is 131324305.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 503423131 - 2⁵ = 503423099 is a prime.

It is a super-2 number, since 2×503423131² = 506869697651686322, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (503423161) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 251711565 + 251711566.

It is an arithmetic number, because the mean of its divisors is an integer number (251711566).

Almost surely, 2^503423131 is an apocalyptic number.

503423131 is a deficient number, since it is larger than the sum of its proper divisors (1).

503423131 is an equidigital number, since it uses as much as digits as its factorization.

503423131 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1080, while the sum is 22.

The square root of 503423131 is about 22437.0927483932. The cubic root of 503423131 is about 795.5077020204.

Adding to 503423131 its reverse (131324305), we get a palindrome (634747436).

The spelling of 503423131 in words is "five hundred three million, four hundred twenty-three thousand, one hundred thirty-one".