6518631323 has 4 divisors (see below), whose sum is σ = 6535389120. Its totient is φ = 6501873528.

The previous prime is 6518631293. The next prime is 6518631347. The reversal of 6518631323 is 3231368156.

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 6518631323 - 2¹⁰ = 6518630299 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (6518631373) 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, 8378315 + ... + 8379092.

It is an arithmetic number, because the mean of its divisors is an integer number (1633847280).

Almost surely, 2^6518631323 is an apocalyptic number.

6518631323 is a deficient number, since it is larger than the sum of its proper divisors (16757797).

6518631323 is a wasteful number, since it uses less digits than its factorization.

6518631323 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16757796.

The product of its digits is 77760, while the sum is 38.

The square root of 6518631323 is about 80738.0413621733. The cubic root of 6518631323 is about 1868.0369959177.

Adding to 6518631323 its reverse (3231368156), we get a palindrome (9749999479).

The spelling of 6518631323 in words is "six billion, five hundred eighteen million, six hundred thirty-one thousand, three hundred twenty-three".