6631311320 has 16 divisors (see below), whose sum is σ = 14920450560. Its totient is φ = 2652524512.

The previous prime is 6631311241. The next prime is 6631311331. The reversal of 6631311320 is 231131366.

It is a self number, because there is not a number n which added to its sum of digits gives 6631311320.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 82891352 + ... + 82891431.

It is an arithmetic number, because the mean of its divisors is an integer number (932528160).

Almost surely, 2^6631311320 is an apocalyptic number.

It is an amenable number.

6631311320 is an abundant number, since it is smaller than the sum of its proper divisors (8289139240).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

6631311320 is a wasteful number, since it uses less digits than its factorization.

6631311320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 165782794 (or 165782790 counting only the distinct ones).

The product of its (nonzero) digits is 1944, while the sum is 26.

The square root of 6631311320 is about 81432.8638818506. The cubic root of 6631311320 is about 1878.7390933917.

Adding to 6631311320 its reverse (231131366), we get a palindrome (6862442686).

The spelling of 6631311320 in words is "six billion, six hundred thirty-one million, three hundred eleven thousand, three hundred twenty".