501312223223 has 16 divisors (see below), whose sum is σ = 596948352000. Its totient is φ = 411894316512.

The previous prime is 501312223163. The next prime is 501312223241. The reversal of 501312223223 is 322322213105.

It is a de Polignac number, because none of the positive numbers 2^k-501312223223 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 501312223192 and 501312223201.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (501312223823) 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, 8854943 + ... + 8911376.

It is an arithmetic number, because the mean of its divisors is an integer number (37309272000).

Almost surely, 2^501312223223 is an apocalyptic number.

501312223223 is a deficient number, since it is larger than the sum of its proper divisors (95636128777).

501312223223 is a wasteful number, since it uses less digits than its factorization.

501312223223 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17766494.

The product of its (nonzero) digits is 4320, while the sum is 26.

Adding to 501312223223 its reverse (322322213105), we get a palindrome (823634436328).

The spelling of 501312223223 in words is "five hundred one billion, three hundred twelve million, two hundred twenty-three thousand, two hundred twenty-three".