4331591 has 8 divisors (see below), whose sum is σ = 4742400. Its totient is φ = 3923640.

The previous prime is 4331581. The next prime is 4331611. The reversal of 4331591 is 1951334.

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 4331591 - 2¹⁰ = 4330567 is a prime.

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 4331591.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4331581) 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, 3650 + ... + 4688.

It is an arithmetic number, because the mean of its divisors is an integer number (592800).

Almost surely, 2^4331591 is an apocalyptic number.

4331591 is a deficient number, since it is larger than the sum of its proper divisors (410809).

4331591 is a wasteful number, since it uses less digits than its factorization.

4331591 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1429.

The product of its digits is 1620, while the sum is 26.

The square root of 4331591 is about 2081.2474624609. The cubic root of 4331591 is about 163.0105880936.

The spelling of 4331591 in words is "four million, three hundred thirty-one thousand, five hundred ninety-one".