6513223231 has 8 divisors (see below), whose sum is σ = 6585506720. Its totient is φ = 6441113952.

The previous prime is 6513223193. The next prime is 6513223247. The reversal of 6513223231 is 1323223156.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 6513223231 - 2¹³ = 6513215039 is a prime.

It is a super-2 number, since 2×6513223231² = 84844153713676158722, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 6513223231.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6513223531) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 32365 + ... + 118633.

It is an arithmetic number, because the mean of its divisors is an integer number (823188340).

Almost surely, 2^6513223231 is an apocalyptic number.

6513223231 is a deficient number, since it is larger than the sum of its proper divisors (72283489).

6513223231 is a wasteful number, since it uses less digits than its factorization.

6513223231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 87105.

The product of its digits is 6480, while the sum is 28.

The square root of 6513223231 is about 80704.5428151353. The cubic root of 6513223231 is about 1867.5202560008.

Adding to 6513223231 its reverse (1323223156), we get a palindrome (7836446387).

The spelling of 6513223231 in words is "six billion, five hundred thirteen million, two hundred twenty-three thousand, two hundred thirty-one".