505351344231 has 16 divisors (see below), whose sum is σ = 749335371520. Its totient is φ = 336600875160.

The previous prime is 505351344143. The next prime is 505351344233. The reversal of 505351344231 is 132443153505.

505351344231 is a `hidden beast` number, since 50 + 5 + 35 + 1 + 344 + 231 = 666.

It is not a de Polignac number, because 505351344231 - 2²¹ = 505349247079 is a prime.

It is a super-2 number, since 2×505351344231² (a number of 24 digits) 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 (505351344233) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8303035 + ... + 8363676.

It is an arithmetic number, because the mean of its divisors is an integer number (46833460720).

Almost surely, 2^505351344231 is an apocalyptic number.

505351344231 is a deficient number, since it is larger than the sum of its proper divisors (243984027289).

505351344231 is a wasteful number, since it uses less digits than its factorization.

505351344231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16667843 (or 16667837 counting only the distinct ones).

The product of its (nonzero) digits is 108000, while the sum is 36.

Adding to 505351344231 its reverse (132443153505), we get a palindrome (637794497736).

The spelling of 505351344231 in words is "five hundred five billion, three hundred fifty-one million, three hundred forty-four thousand, two hundred thirty-one".