5115321214231 has 4 divisors (see below), whose sum is σ = 5120961040072. Its totient is φ = 5109681388392.

The previous prime is 5115321214169. The next prime is 5115321214243. The reversal of 5115321214231 is 1324121235115.

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

It is a cyclic number.

It is not a de Polignac number, because 5115321214231 - 2⁷ = 5115321214103 is a prime.

It is a super-2 number, since 2×5115321214231² (a number of 26 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 5115321214193 and 5115321214202.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5115321814231) 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, 2819911560 + ... + 2819913373.

It is an arithmetic number, because the mean of its divisors is an integer number (1280240260018).

Almost surely, 2^{5115321214231} is an apocalyptic number.

5115321214231 is a deficient number, since it is larger than the sum of its proper divisors (5639825841).

5115321214231 is an equidigital number, since it uses as much as digits as its factorization.

5115321214231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5639825840.

The product of its digits is 7200, while the sum is 31.

Adding to 5115321214231 its reverse (1324121235115), we get a palindrome (6439442449346).

The spelling of 5115321214231 in words is "five trillion, one hundred fifteen billion, three hundred twenty-one million, two hundred fourteen thousand, two hundred thirty-one".