20204311 has 2 divisors, whose sum is σ = 20204312. Its totient is φ = 20204310.

The previous prime is 20204299. The next prime is 20204323. The reversal of 20204311 is 11340202.

It is a balanced prime because it is at equal distance from previous prime (20204299) and next prime (20204323).

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20204311 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 20204291 and 20204300.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20204341) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10102155 + 10102156.

It is an arithmetic number, because the mean of its divisors is an integer number (10102156).

Almost surely, 2^20204311 is an apocalyptic number.

20204311 is a deficient number, since it is larger than the sum of its proper divisors (1).

20204311 is an equidigital number, since it uses as much as digits as its factorization.

20204311 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 48, while the sum is 13.

The square root of 20204311 is about 4494.9205777188. The cubic root of 20204311 is about 272.3629409227.

Adding to 20204311 its reverse (11340202), we get a palindrome (31544513).

The spelling of 20204311 in words is "twenty million, two hundred four thousand, three hundred eleven".