200206031 has 2 divisors, whose sum is σ = 200206032. Its totient is φ = 200206030.

The previous prime is 200205997. The next prime is 200206033. The reversal of 200206031 is 130602002.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-200206031 is a prime.

It is a super-2 number, since 2×200206031² = 80164909697545922, which contains 22 as substring.

It is a Sophie Germain prime.

Together with 200206033, it forms a pair of twin primes.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 200205997 and 200206015.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (200206033) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 100103015 + 100103016.

It is an arithmetic number, because the mean of its divisors is an integer number (100103016).

Almost surely, 2^200206031 is an apocalyptic number.

200206031 is a deficient number, since it is larger than the sum of its proper divisors (1).

200206031 is an equidigital number, since it uses as much as digits as its factorization.

200206031 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 200206031 is about 14149.4180445699. The cubic root of 200206031 is about 585.0042914921.

Adding to 200206031 its reverse (130602002), we get a palindrome (330808033).

The spelling of 200206031 in words is "two hundred million, two hundred six thousand, thirty-one".