501330231 has 6 divisors (see below), whose sum is σ = 724143680. Its totient is φ = 334220148.

The previous prime is 501330229. The next prime is 501330239. The reversal of 501330231 is 132033105.

It is not a de Polignac number, because 501330231 - 2¹ = 501330229 is a prime.

It is a super-2 number, since 2×501330231² = 502664001029026722, 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 (501330239) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 27851671 + ... + 27851688.

Almost surely, 2^501330231 is an apocalyptic number.

501330231 is a deficient number, since it is larger than the sum of its proper divisors (222813449).

501330231 is a wasteful number, since it uses less digits than its factorization.

501330231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 55703365 (or 55703362 counting only the distinct ones).

The product of its (nonzero) digits is 270, while the sum is 18.

The square root of 501330231 is about 22390.4048869153. The cubic root of 501330231 is about 794.4037727282.

Adding to 501330231 its reverse (132033105), we get a palindrome (633363336).

The spelling of 501330231 in words is "five hundred one million, three hundred thirty thousand, two hundred thirty-one".