6415231 has 4 divisors (see below), whose sum is σ = 6421464. Its totient is φ = 6409000.

The previous prime is 6415219. The next prime is 6415237. The reversal of 6415231 is 1325146.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 6415231 - 2⁹ = 6414719 is a prime.

It is a super-2 number, since 2×6415231² = 82310377566722, which contains 22 as substring.

It is a Smith number, since the sum of its digits (22) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

6415231 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6415237) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1165 + ... + 3766.

It is an arithmetic number, because the mean of its divisors is an integer number (1605366).

Almost surely, 2^6415231 is an apocalyptic number.

6415231 is a deficient number, since it is larger than the sum of its proper divisors (6233).

6415231 is a wasteful number, since it uses less digits than its factorization.

6415231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6232.

The product of its digits is 720, while the sum is 22.

The square root of 6415231 is about 2532.8306299475. The cubic root of 6415231 is about 185.8107200772.

The spelling of 6415231 in words is "six million, four hundred fifteen thousand, two hundred thirty-one".