505351531223 has 16 divisors (see below), whose sum is σ = 645415706880. Its totient is φ = 384176011200.

The previous prime is 505351531219. The next prime is 505351531273. The reversal of 505351531223 is 322135153505.

It is a cyclic number.

It is not a de Polignac number, because 505351531223 - 2² = 505351531219 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (505351531273) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 80033513 + ... + 80039826.

It is an arithmetic number, because the mean of its divisors is an integer number (40338481680).

Almost surely, 2^505351531223 is an apocalyptic number.

505351531223 is a deficient number, since it is larger than the sum of its proper divisors (140064175657).

505351531223 is a wasteful number, since it uses less digits than its factorization.

505351531223 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 160073398.

The product of its (nonzero) digits is 67500, while the sum is 35.

Adding to 505351531223 its reverse (322135153505), we get a palindrome (827486684728).

The spelling of 505351531223 in words is "five hundred five billion, three hundred fifty-one million, five hundred thirty-one thousand, two hundred twenty-three".