6231391 has 8 divisors (see below), whose sum is σ = 6355440. Its totient is φ = 6108672.

The previous prime is 6231383. The next prime is 6231419. The reversal of 6231391 is 1931326.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 6231391 - 2³ = 6231383 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 (6231301) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 15825 + ... + 16213.

It is an arithmetic number, because the mean of its divisors is an integer number (794430).

Almost surely, 2^6231391 is an apocalyptic number.

6231391 is a deficient number, since it is larger than the sum of its proper divisors (124049).

6231391 is a wasteful number, since it uses less digits than its factorization.

6231391 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 665.

The product of its digits is 972, while the sum is 25.

The square root of 6231391 is about 2496.2754255090. The cubic root of 6231391 is about 184.0185768106.

The spelling of 6231391 in words is "six million, two hundred thirty-one thousand, three hundred ninety-one".