200013123 has 4 divisors (see below), whose sum is σ = 266684168. Its totient is φ = 133342080.

The previous prime is 200013103. The next prime is 200013131. The reversal of 200013123 is 321310002.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 200013123 - 2⁵ = 200013091 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 200013099 and 200013108.

It is not an unprimeable number, because it can be changed into a prime (200013103) 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, 33335518 + ... + 33335523.

It is an arithmetic number, because the mean of its divisors is an integer number (66671042).

Almost surely, 2^200013123 is an apocalyptic number.

200013123 is a deficient number, since it is larger than the sum of its proper divisors (66671045).

200013123 is an equidigital number, since it uses as much as digits as its factorization.

200013123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 66671044.

The product of its (nonzero) digits is 36, while the sum is 12.

The square root of 200013123 is about 14142.5995842349. The cubic root of 200013123 is about 584.8163379911.

Adding to 200013123 its reverse (321310002), we get a palindrome (521323125).

The spelling of 200013123 in words is "two hundred million, thirteen thousand, one hundred twenty-three".