200998123 has 4 divisors (see below), whose sum is σ = 212821560. Its totient is φ = 189174688.

The previous prime is 200998121. The next prime is 200998139. The reversal of 200998123 is 321899002.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 321899002 = 2 ⋅160949501.

It is a cyclic number.

It is not a de Polignac number, because 200998123 - 2¹ = 200998121 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (200998121) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5911693 + ... + 5911726.

It is an arithmetic number, because the mean of its divisors is an integer number (53205390).

Almost surely, 2^200998123 is an apocalyptic number.

200998123 is a deficient number, since it is larger than the sum of its proper divisors (11823437).

200998123 is a wasteful number, since it uses less digits than its factorization.

200998123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11823436.

The product of its (nonzero) digits is 7776, while the sum is 34.

The square root of 200998123 is about 14177.3806819172. The cubic root of 200998123 is about 585.7747768719.

The spelling of 200998123 in words is "two hundred million, nine hundred ninety-eight thousand, one hundred twenty-three".