20201329 has 2 divisors, whose sum is σ = 20201330. Its totient is φ = 20201328.

The previous prime is 20201303. The next prime is 20201341. The reversal of 20201329 is 92310202.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 20007729 + 193600 = 4473^2 + 440^2 .

It is a cyclic number.

It is not a de Polignac number, because 20201329 - 2¹⁷ = 20070257 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (20201359) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10100664 + 10100665.

It is an arithmetic number, because the mean of its divisors is an integer number (10100665).

Almost surely, 2^20201329 is an apocalyptic number.

It is an amenable number.

20201329 is a deficient number, since it is larger than the sum of its proper divisors (1).

20201329 is an equidigital number, since it uses as much as digits as its factorization.

20201329 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 216, while the sum is 19.

The square root of 20201329 is about 4494.5888577266. The cubic root of 20201329 is about 272.3495407091.

The spelling of 20201329 in words is "twenty million, two hundred one thousand, three hundred twenty-nine".