20325131 has 2 divisors, whose sum is σ = 20325132. Its totient is φ = 20325130.

The previous prime is 20325113. The next prime is 20325133. The reversal of 20325131 is 13152302.

Together with previous prime (20325113) it forms an Ormiston pair, because they use the same digits, order apart.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20325131 is a prime.

It is a super-2 number, since 2×20325131² = 826221900334322, which contains 22 as substring.

Together with 20325133, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (20325133) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10162565 + 10162566.

It is an arithmetic number, because the mean of its divisors is an integer number (10162566).

Almost surely, 2^20325131 is an apocalyptic number.

20325131 is a deficient number, since it is larger than the sum of its proper divisors (1).

20325131 is an equidigital number, since it uses as much as digits as its factorization.

20325131 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 180, while the sum is 17.

The square root of 20325131 is about 4508.3401601920. The cubic root of 20325131 is about 272.9047644661.

Adding to 20325131 its reverse (13152302), we get a palindrome (33477433).

The spelling of 20325131 in words is "twenty million, three hundred twenty-five thousand, one hundred thirty-one".