20331441 has 12 divisors (see below), whose sum is σ = 31626868. Its totient is φ = 12511584.

The previous prime is 20331419. The next prime is 20331461. The reversal of 20331441 is 14413302.

It can be written as a sum of positive squares in 2 ways, for example, as 1147041 + 19184400 = 1071^2 + 4380^2 .

It is not a de Polignac number, because 20331441 - 2⁷ = 20331313 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (20331461) 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, 86770 + ... + 87003.

Almost surely, 2^20331441 is an apocalyptic number.

It is an amenable number.

20331441 is a deficient number, since it is larger than the sum of its proper divisors (11295427).

20331441 is a wasteful number, since it uses less digits than its factorization.

20331441 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 173792 (or 173789 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 18.

The square root of 20331441 is about 4509.0399199830. The cubic root of 20331441 is about 272.9330029211.

Adding to 20331441 its reverse (14413302), we get a palindrome (34744743).

The spelling of 20331441 in words is "twenty million, three hundred thirty-one thousand, four hundred forty-one".