200020031 has 2 divisors, whose sum is σ = 200020032. Its totient is φ = 200020030.

The previous prime is 200019997. The next prime is 200020033. The reversal of 200020031 is 130020002.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 200020031 - 2¹⁴ = 200003647 is a prime.

It is a super-2 number, since 2×200020031² = 80016025602481922, which contains 22 as substring.

It is a Sophie Germain prime.

Together with 200020033, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (200020033) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 100010015 + 100010016.

It is an arithmetic number, because the mean of its divisors is an integer number (100010016).

Almost surely, 2^200020031 is an apocalyptic number.

200020031 is a deficient number, since it is larger than the sum of its proper divisors (1).

200020031 is an equidigital number, since it uses as much as digits as its factorization.

200020031 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 12, while the sum is 8.

The square root of 200020031 is about 14142.8438087960. The cubic root of 200020031 is about 584.8230706572.

Adding to 200020031 its reverse (130020002), we get a palindrome (330040033).

The spelling of 200020031 in words is "two hundred million, twenty thousand, thirty-one".