20311363 has 2 divisors, whose sum is σ = 20311364. Its totient is φ = 20311362.

The previous prime is 20311337. The next prime is 20311381. The reversal of 20311363 is 36311302.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 20311363 - 2⁵ = 20311331 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 20311363.

It is not a weakly prime, because it can be changed into another prime (20311763) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10155681 + 10155682.

It is an arithmetic number, because the mean of its divisors is an integer number (10155682).

Almost surely, 2^20311363 is an apocalyptic number.

20311363 is a deficient number, since it is larger than the sum of its proper divisors (1).

20311363 is an equidigital number, since it uses as much as digits as its factorization.

20311363 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 324, while the sum is 19.

The square root of 20311363 is about 4506.8129537401. The cubic root of 20311363 is about 272.8431297423.

Adding to 20311363 its reverse (36311302), we get a palindrome (56622665).

The spelling of 20311363 in words is "twenty million, three hundred eleven thousand, three hundred sixty-three".