2331641 has 4 divisors (see below), whose sum is σ = 2511012. Its totient is φ = 2152272.

The previous prime is 2331613. The next prime is 2331647. The reversal of 2331641 is 1461332.

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

It can be written as a sum of positive squares in 2 ways, for example, as 1371241 + 960400 = 1171^2 + 980^2 .

It is a cyclic number.

It is not a de Polignac number, because 2331641 - 2⁶ = 2331577 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2331647) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 89666 + ... + 89691.

It is an arithmetic number, because the mean of its divisors is an integer number (627753).

2^2331641 is an apocalyptic number.

It is an amenable number.

2331641 is a deficient number, since it is larger than the sum of its proper divisors (179371).

2331641 is a wasteful number, since it uses less digits than its factorization.

2331641 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 179370.

The product of its digits is 432, while the sum is 20.

The square root of 2331641 is about 1526.9711850588. The cubic root of 2331641 is about 132.6031663594.

Adding to 2331641 its reverse (1461332), we get a palindrome (3792973).

The spelling of 2331641 in words is "two million, three hundred thirty-one thousand, six hundred forty-one".