20000311 has 2 divisors, whose sum is σ = 20000312. Its totient is φ = 20000310.

The previous prime is 20000303. The next prime is 20000327. The reversal of 20000311 is 11300002.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 20000311 - 2³ = 20000303 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 20000294 and 20000303.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20004311) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10000155 + 10000156.

It is an arithmetic number, because the mean of its divisors is an integer number (10000156).

Almost surely, 2^20000311 is an apocalyptic number.

20000311 is a deficient number, since it is larger than the sum of its proper divisors (1).

20000311 is an equidigital number, since it uses as much as digits as its factorization.

20000311 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 6, while the sum is 7.

The square root of 20000311 is about 4472.1707257215. The cubic root of 20000311 is about 271.4431686253.

Adding to 20000311 its reverse (11300002), we get a palindrome (31300313).

The spelling of 20000311 in words is "twenty million, three hundred eleven", and thus it is an aban number.