6323491021 has 4 divisors (see below), whose sum is σ = 6417871552. Its totient is φ = 6229110492.

The previous prime is 6323491019. The next prime is 6323491079. The reversal of 6323491021 is 1201943236.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 6323491021 - 2¹ = 6323491019 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 (6323491001) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 47190165 + ... + 47190298.

It is an arithmetic number, because the mean of its divisors is an integer number (1604467888).

Almost surely, 2^6323491021 is an apocalyptic number.

It is an amenable number.

6323491021 is a deficient number, since it is larger than the sum of its proper divisors (94380531).

6323491021 is an equidigital number, since it uses as much as digits as its factorization.

6323491021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 94380530.

The product of its (nonzero) digits is 7776, while the sum is 31.

The square root of 6323491021 is about 79520.3811673460. The cubic root of 6323491021 is about 1849.2074541400.

The spelling of 6323491021 in words is "six billion, three hundred twenty-three million, four hundred ninety-one thousand, twenty-one".