6311320421 has 32 divisors (see below), whose sum is σ = 7741163520. Its totient is φ = 5025672000.

The previous prime is 6311320403. The next prime is 6311320481. The reversal of 6311320421 is 1240231136.

It is a cyclic number.

It is not a de Polignac number, because 6311320421 - 2⁶ = 6311320357 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6311320481) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1435136 + ... + 1439526.

It is an arithmetic number, because the mean of its divisors is an integer number (241911360).

Almost surely, 2^6311320421 is an apocalyptic number.

It is an amenable number.

6311320421 is a deficient number, since it is larger than the sum of its proper divisors (1429843099).

6311320421 is a wasteful number, since it uses less digits than its factorization.

6311320421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4625.

The product of its (nonzero) digits is 864, while the sum is 23.

The square root of 6311320421 is about 79443.8192750072. The cubic root of 6311320421 is about 1848.0203240965.

Adding to 6311320421 its reverse (1240231136), we get a palindrome (7551551557).

The spelling of 6311320421 in words is "six billion, three hundred eleven million, three hundred twenty thousand, four hundred twenty-one".