506503031 has 2 divisors, whose sum is σ = 506503032. Its totient is φ = 506503030.

The previous prime is 506502991. The next prime is 506503043. The reversal of 506503031 is 130305605.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 506503031 - 2¹⁴ = 506486647 is a prime.

It is a super-2 number, since 2×506503031² = 513090640824373922, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 506502988 and 506503006.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (506503331) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 253251515 + 253251516.

It is an arithmetic number, because the mean of its divisors is an integer number (253251516).

Almost surely, 2^506503031 is an apocalyptic number.

506503031 is a deficient number, since it is larger than the sum of its proper divisors (1).

506503031 is an equidigital number, since it uses as much as digits as its factorization.

506503031 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1350, while the sum is 23.

The square root of 506503031 is about 22505.6222086838. The cubic root of 506503031 is about 797.1266877636.

Adding to 506503031 its reverse (130305605), we get a palindrome (636808636).

The spelling of 506503031 in words is "five hundred six million, five hundred three thousand, thirty-one".