20023141 has 2 divisors, whose sum is σ = 20023142. Its totient is φ = 20023140.

The previous prime is 20023139. The next prime is 20023147. The reversal of 20023141 is 14132002.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 15634116 + 4389025 = 3954^2 + 2095^2 .

It is a cyclic number.

It is not a de Polignac number, because 20023141 - 2¹ = 20023139 is a prime.

Together with 20023139, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20023147) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10011570 + 10011571.

It is an arithmetic number, because the mean of its divisors is an integer number (10011571).

Almost surely, 2^20023141 is an apocalyptic number.

It is an amenable number.

20023141 is a deficient number, since it is larger than the sum of its proper divisors (1).

20023141 is an equidigital number, since it uses as much as digits as its factorization.

20023141 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 48, while the sum is 13.

The square root of 20023141 is about 4474.7224494934. The cubic root of 20023141 is about 271.5464118715.

Adding to 20023141 its reverse (14132002), we get a palindrome (34155143).

It can be divided in two parts, 20023 and 141, that added together give a square (20164 = 142²).

The spelling of 20023141 in words is "twenty million, twenty-three thousand, one hundred forty-one".