4891231 has 4 divisors (see below), whose sum is σ = 4903600. Its totient is φ = 4878864.

The previous prime is 4891217. The next prime is 4891241. The reversal of 4891231 is 1321984.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 4891231 - 2¹⁵ = 4858463 is a prime.

It is a super-2 number, since 2×4891231² = 47848281390722, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 4891231.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4891241) 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, 5571 + ... + 6388.

It is an arithmetic number, because the mean of its divisors is an integer number (1225900).

Almost surely, 2^4891231 is an apocalyptic number.

4891231 is a deficient number, since it is larger than the sum of its proper divisors (12369).

4891231 is a wasteful number, since it uses less digits than its factorization.

4891231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12368.

The product of its digits is 1728, while the sum is 28.

The square root of 4891231 is about 2211.6127599560. The cubic root of 4891231 is about 169.7485440432.

The spelling of 4891231 in words is "four million, eight hundred ninety-one thousand, two hundred thirty-one".