200020311 has 12 divisors (see below), whose sum is σ = 289356288. Its totient is φ = 133144704.

The previous prime is 200020267. The next prime is 200020313. The reversal of 200020311 is 113020002.

It is a happy number.

It is a de Polignac number, because none of the positive numbers 2^k-200020311 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (9).

It is a junction number, because it is equal to n+sod(n) for n = 200020293 and 200020302.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (200020313) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 10455 + ... + 22568.

It is an arithmetic number, because the mean of its divisors is an integer number (24113024).

Almost surely, 2^200020311 is an apocalyptic number.

200020311 is a deficient number, since it is larger than the sum of its proper divisors (89335977).

200020311 is a wasteful number, since it uses less digits than its factorization.

200020311 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33702 (or 33699 counting only the distinct ones).

The product of its (nonzero) digits is 12, while the sum is 9.

The square root of 200020311 is about 14142.8537077918. The cubic root of 200020311 is about 584.8233435472.

Adding to 200020311 its reverse (113020002), we get a palindrome (313040313).

The spelling of 200020311 in words is "two hundred million, twenty thousand, three hundred eleven".