20201387 has 2 divisors, whose sum is σ = 20201388. Its totient is φ = 20201386.

The previous prime is 20201381. The next prime is 20201393. The reversal of 20201387 is 78310202.

It is a balanced prime because it is at equal distance from previous prime (20201381) and next prime (20201393).

It is a cyclic number.

It is not a de Polignac number, because 20201387 - 2¹² = 20197291 is a prime.

It is not a weakly prime, because it can be changed into another prime (20201381) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10100693 + 10100694.

It is an arithmetic number, because the mean of its divisors is an integer number (10100694).

Almost surely, 2^20201387 is an apocalyptic number.

20201387 is a deficient number, since it is larger than the sum of its proper divisors (1).

20201387 is an equidigital number, since it uses as much as digits as its factorization.

20201387 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 672, while the sum is 23.

The square root of 20201387 is about 4494.5953099250. The cubic root of 20201387 is about 272.3498013563.

Adding to 20201387 its reverse (78310202), we get a palindrome (98511589).

The spelling of 20201387 in words is "twenty million, two hundred one thousand, three hundred eighty-seven".