500340231121 has 4 divisors (see below), whose sum is σ = 503527111732. Its totient is φ = 497153350512.

The previous prime is 500340231109. The next prime is 500340231133. The reversal of 500340231121 is 121132043005.

It is a happy number.

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

It is an interprime number because it is at equal distance from previous prime (500340231109) and next prime (500340231133).

It can be written as a sum of positive squares in 2 ways, for example, as 177608302096 + 322731929025 = 421436^2 + 568095^2 .

It is a cyclic number.

It is not a de Polignac number, because 500340231121 - 2⁷ = 500340230993 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 500340231092 and 500340231101.

It is not an unprimeable number, because it can be changed into a prime (500340231101) 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, 1593440070 + ... + 1593440383.

It is an arithmetic number, because the mean of its divisors is an integer number (125881777933).

Almost surely, 2^500340231121 is an apocalyptic number.

It is an amenable number.

500340231121 is a deficient number, since it is larger than the sum of its proper divisors (3186880611).

500340231121 is a wasteful number, since it uses less digits than its factorization.

500340231121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3186880610.

The product of its (nonzero) digits is 720, while the sum is 22.

Adding to 500340231121 its reverse (121132043005), we get a palindrome (621472274126).

The spelling of 500340231121 in words is "five hundred billion, three hundred forty million, two hundred thirty-one thousand, one hundred twenty-one".