20043311 has 2 divisors, whose sum is σ = 20043312. Its totient is φ = 20043310.

The previous prime is 20043269. The next prime is 20043337. The reversal of 20043311 is 11334002.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 20043311 - 2¹⁰ = 20042287 is a prime.

It is a Sophie Germain 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 (20043341) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10021655 + 10021656.

It is an arithmetic number, because the mean of its divisors is an integer number (10021656).

Almost surely, 2^20043311 is an apocalyptic number.

20043311 is a deficient number, since it is larger than the sum of its proper divisors (1).

20043311 is an equidigital number, since it uses as much as digits as its factorization.

20043311 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 72, while the sum is 14.

The square root of 20043311 is about 4476.9756532731. The cubic root of 20043311 is about 271.6375606256.

Adding to 20043311 its reverse (11334002), we get a palindrome (31377313).

The spelling of 20043311 in words is "twenty million, forty-three thousand, three hundred eleven".