20324131 has 2 divisors, whose sum is σ = 20324132. Its totient is φ = 20324130.

The previous prime is 20324123. The next prime is 20324141. The reversal of 20324131 is 13142302.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 20324131 - 2³ = 20324123 is a prime.

It is a super-2 number, since 2×20324131² = 826140601810322, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (20324141) 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 as a sum of consecutive naturals, namely, 10162065 + 10162066.

It is an arithmetic number, because the mean of its divisors is an integer number (10162066).

Almost surely, 2^20324131 is an apocalyptic number.

20324131 is a deficient number, since it is larger than the sum of its proper divisors (1).

20324131 is an equidigital number, since it uses as much as digits as its factorization.

20324131 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 144, while the sum is 16.

The square root of 20324131 is about 4508.2292532656. The cubic root of 20324131 is about 272.9002887387.

Adding to 20324131 its reverse (13142302), we get a palindrome (33466433).

The spelling of 20324131 in words is "twenty million, three hundred twenty-four thousand, one hundred thirty-one".