6501320431 has 8 divisors (see below), whose sum is σ = 6839887824. Its totient is φ = 6171324480.

The previous prime is 6501320407. The next prime is 6501320437. The reversal of 6501320431 is 1340231056.

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 6501320431 - 2⁹ = 6501319919 is a prime.

It is a super-2 number, since 2×6501320431² = 84534334693076051522, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 6501320396 and 6501320405.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6501320437) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2141305 + ... + 2144338.

It is an arithmetic number, because the mean of its divisors is an integer number (854985978).

Almost surely, 2^6501320431 is an apocalyptic number.

6501320431 is a deficient number, since it is larger than the sum of its proper divisors (338567393).

6501320431 is a wasteful number, since it uses less digits than its factorization.

6501320431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4285721.

The product of its (nonzero) digits is 2160, while the sum is 25.

The square root of 6501320431 is about 80630.7660325759. The cubic root of 6501320431 is about 1866.3819422482.

Adding to 6501320431 its reverse (1340231056), we get a palindrome (7841551487).

The spelling of 6501320431 in words is "six billion, five hundred one million, three hundred twenty thousand, four hundred thirty-one".