20261303 has 2 divisors, whose sum is σ = 20261304. Its totient is φ = 20261302.

The previous prime is 20261291. The next prime is 20261323. The reversal of 20261303 is 30316202.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 20261303 - 2⁴ = 20261287 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20261323) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10130651 + 10130652.

It is an arithmetic number, because the mean of its divisors is an integer number (10130652).

Almost surely, 2^20261303 is an apocalyptic number.

20261303 is a deficient number, since it is larger than the sum of its proper divisors (1).

20261303 is an equidigital number, since it uses as much as digits as its factorization.

20261303 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 17.

The square root of 20261303 is about 4501.2557136870. The cubic root of 20261303 is about 272.6187928602.

Adding to 20261303 its reverse (30316202), we get a palindrome (50577505).

The spelling of 20261303 in words is "twenty million, two hundred sixty-one thousand, three hundred three".