200109031 has 2 divisors, whose sum is σ = 200109032. Its totient is φ = 200109030.

The previous prime is 200109011. The next prime is 200109037. The reversal of 200109031 is 130901002.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 200109031 - 2²³ = 191720423 is a prime.

It is a super-2 number, since 2×200109031² = 80087248575517922, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 200108996 and 200109014.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (200109037) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 100054515 + 100054516.

It is an arithmetic number, because the mean of its divisors is an integer number (100054516).

Almost surely, 2^200109031 is an apocalyptic number.

200109031 is a deficient number, since it is larger than the sum of its proper divisors (1).

200109031 is an equidigital number, since it uses as much as digits as its factorization.

200109031 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 54, while the sum is 16.

The square root of 200109031 is about 14145.9899264774. The cubic root of 200109031 is about 584.9097978633.

The spelling of 200109031 in words is "two hundred million, one hundred nine thousand, thirty-one".