20945303 has 2 divisors, whose sum is σ = 20945304. Its totient is φ = 20945302.

The previous prime is 20945291. The next prime is 20945317. The reversal of 20945303 is 30354902.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 20945303 - 2¹⁰ = 20944279 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20945363) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10472651 + 10472652.

It is an arithmetic number, because the mean of its divisors is an integer number (10472652).

Almost surely, 2^20945303 is an apocalyptic number.

20945303 is a deficient number, since it is larger than the sum of its proper divisors (1).

20945303 is an equidigital number, since it uses as much as digits as its factorization.

20945303 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3240, while the sum is 26.

The square root of 20945303 is about 4576.6038718683. The cubic root of 20945303 is about 275.6526778252.

The spelling of 20945303 in words is "twenty million, nine hundred forty-five thousand, three hundred three".