200100031 has 2 divisors, whose sum is σ = 200100032. Its totient is φ = 200100030.

The previous prime is 200100007. The next prime is 200100053. The reversal of 200100031 is 130001002.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-200100031 is a prime.

It is a super-2 number, since 2×200100031² = 80080044812401922, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 200099987 and 200100023.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (200100331) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 100050015 + 100050016.

It is an arithmetic number, because the mean of its divisors is an integer number (100050016).

Almost surely, 2^200100031 is an apocalyptic number.

200100031 is a deficient number, since it is larger than the sum of its proper divisors (1).

200100031 is an equidigital number, since it uses as much as digits as its factorization.

200100031 is an evil number, because the sum of its binary digits is even.

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

The square root of 200100031 is about 14145.6718115472. The cubic root of 200100031 is about 584.9010288653.

Adding to 200100031 its reverse (130001002), we get a palindrome (330101033).

The spelling of 200100031 in words is "two hundred million, one hundred thousand, thirty-one".