505226231 has 12 divisors (see below), whose sum is σ = 531910776. Its totient is φ = 479522880.

The previous prime is 505226203. The next prime is 505226233. The reversal of 505226231 is 132622505.

It is not a de Polignac number, because 505226231 - 2⁶ = 505226167 is a prime.

It is a super-2 number, since 2×505226231² = 510507088980930722, which contains 22 as substring.

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 505226231.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (505226233) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 58136 + ... + 66258.

It is an arithmetic number, because the mean of its divisors is an integer number (44325898).

Almost surely, 2^505226231 is an apocalyptic number.

505226231 is a deficient number, since it is larger than the sum of its proper divisors (26684545).

505226231 is an equidigital number, since it uses as much as digits as its factorization.

505226231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8242 (or 8201 counting only the distinct ones).

The product of its (nonzero) digits is 3600, while the sum is 26.

The square root of 505226231 is about 22477.2380643174. The cubic root of 505226231 is about 796.4563214174.

Adding to 505226231 its reverse (132622505), we get a palindrome (637848736).

The spelling of 505226231 in words is "five hundred five million, two hundred twenty-six thousand, two hundred thirty-one".