503123123610313 has 4 divisors (see below), whose sum is σ = 503315375475220. Its totient is φ = 502930871745408.

The previous prime is 503123123610311. The next prime is 503123123610337. The reversal of 503123123610313 is 313016321321305.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 347843686722624 + 155279436887689 = 18650568^2 + 12461117^2 .

It is a cyclic number.

It is not a de Polignac number, because 503123123610313 - 2¹ = 503123123610311 is a prime.

It is a super-2 number, since 2×503123123610313² (a number of 30 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (503123123610311) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 96125928528 + ... + 96125933761.

It is an arithmetic number, because the mean of its divisors is an integer number (125828843868805).

Almost surely, 2^{503123123610313} is an apocalyptic number.

It is an amenable number.

503123123610313 is a deficient number, since it is larger than the sum of its proper divisors (192251864907).

503123123610313 is a wasteful number, since it uses less digits than its factorization.

503123123610313 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 192251864906.

The product of its (nonzero) digits is 29160, while the sum is 34.

Adding to 503123123610313 its reverse (313016321321305), we get a palindrome (816139444931618).

The spelling of 503123123610313 in words is "five hundred three trillion, one hundred twenty-three billion, one hundred twenty-three million, six hundred ten thousand, three hundred thirteen".