20271367 has 2 divisors, whose sum is σ = 20271368. Its totient is φ = 20271366.

The previous prime is 20271353. The next prime is 20271373. The reversal of 20271367 is 76317202.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 20271367 - 2⁷ = 20271239 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20281367) 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, 10135683 + 10135684.

It is an arithmetic number, because the mean of its divisors is an integer number (10135684).

Almost surely, 2^20271367 is an apocalyptic number.

20271367 is a deficient number, since it is larger than the sum of its proper divisors (1).

20271367 is an equidigital number, since it uses as much as digits as its factorization.

20271367 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3528, while the sum is 28.

The square root of 20271367 is about 4502.3734851742. The cubic root of 20271367 is about 272.6639229191.

Adding to 20271367 its reverse (76317202), we get a palindrome (96588569).

The spelling of 20271367 in words is "twenty million, two hundred seventy-one thousand, three hundred sixty-seven".