6231891 has 4 divisors (see below), whose sum is σ = 8309192. Its totient is φ = 4154592.

The previous prime is 6231887. The next prime is 6231893. The reversal of 6231891 is 1981326.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 6231891 - 2² = 6231887 is a prime.

It is a D-number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (6231893) 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, 1038646 + ... + 1038651.

It is an arithmetic number, because the mean of its divisors is an integer number (2077298).

Almost surely, 2^6231891 is an apocalyptic number.

6231891 is a deficient number, since it is larger than the sum of its proper divisors (2077301).

6231891 is a wasteful number, since it uses less digits than its factorization.

6231891 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2077300.

The product of its digits is 2592, while the sum is 30.

The square root of 6231891 is about 2496.3755727054. The cubic root of 6231891 is about 184.0234984954.

The spelling of 6231891 in words is "six million, two hundred thirty-one thousand, eight hundred ninety-one".