20943127 has 2 divisors, whose sum is σ = 20943128. Its totient is φ = 20943126.

The previous prime is 20943113. The next prime is 20943157. The reversal of 20943127 is 72134902.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20943127 is a prime.

It is a super-2 number, since 2×20943127² = 877229137076258, which contains 22 as substring.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 20943095 and 20943104.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20943157) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10471563 + 10471564.

It is an arithmetic number, because the mean of its divisors is an integer number (10471564).

Almost surely, 2^20943127 is an apocalyptic number.

20943127 is a deficient number, since it is larger than the sum of its proper divisors (1).

20943127 is an equidigital number, since it uses as much as digits as its factorization.

20943127 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3024, while the sum is 28.

The square root of 20943127 is about 4576.3661348279. The cubic root of 20943127 is about 275.6431316754.

The spelling of 20943127 in words is "twenty million, nine hundred forty-three thousand, one hundred twenty-seven".