6311421 has 12 divisors (see below), whose sum is σ = 9142848. Its totient is φ = 4195464.

The previous prime is 6311419. The next prime is 6311429. The reversal of 6311421 is 1241136.

It is a happy number.

6311421 is a `hidden beast` number, since 631 + 14 + 21 = 666.

It is not a de Polignac number, because 6311421 - 2¹ = 6311419 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 6311394 and 6311403.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6311429) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3196 + ... + 4778.

It is an arithmetic number, because the mean of its divisors is an integer number (761904).

Almost surely, 2^6311421 is an apocalyptic number.

It is an amenable number.

6311421 is a deficient number, since it is larger than the sum of its proper divisors (2831427).

6311421 is a wasteful number, since it uses less digits than its factorization.

6311421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2032 (or 2029 counting only the distinct ones).

The product of its digits is 144, while the sum is 18.

The square root of 6311421 is about 2512.2541670778. The cubic root of 6311421 is about 184.8030140904.

Adding to 6311421 its reverse (1241136), we get a palindrome (7552557).

The spelling of 6311421 in words is "six million, three hundred eleven thousand, four hundred twenty-one".