2231541 has 12 divisors (see below), whose sum is σ = 3471468. Its totient is φ = 1373184.

The previous prime is 2231533. The next prime is 2231587. The reversal of 2231541 is 1451322.

It can be written as a sum of positive squares in 2 ways, for example, as 140625 + 2090916 = 375^2 + 1446^2 .

It is not a de Polignac number, because 2231541 - 2³ = 2231533 is a prime.

It is a super-3 number, since 3×2231541³ = 33337717820925820263, which contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2231501) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 9420 + ... + 9653.

It is an arithmetic number, because the mean of its divisors is an integer number (289289).

2^2231541 is an apocalyptic number.

It is an amenable number.

2231541 is a deficient number, since it is larger than the sum of its proper divisors (1239927).

2231541 is a wasteful number, since it uses less digits than its factorization.

2231541 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19092 (or 19089 counting only the distinct ones).

The product of its digits is 240, while the sum is 18.

The square root of 2231541 is about 1493.8343281636. The cubic root of 2231541 is about 130.6777425650.

Adding to 2231541 its reverse (1451322), we get a palindrome (3682863).

It can be divided in two parts, 2231 and 541, that added together give a palindrome (2772).

The spelling of 2231541 in words is "two million, two hundred thirty-one thousand, five hundred forty-one".