200203031123 has 4 divisors (see below), whose sum is σ = 200224523760. Its totient is φ = 200181538488.

The previous prime is 200203031111. The next prime is 200203031131. The reversal of 200203031123 is 321130302002.

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

It is a cyclic number.

It is not a de Polignac number, because 200203031123 - 2⁴ = 200203031107 is a prime.

It is a super-2 number, since 2×200203031123² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (200203031723) 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, 10732340 + ... + 10750977.

It is an arithmetic number, because the mean of its divisors is an integer number (50056130940).

Almost surely, 2^200203031123 is an apocalyptic number.

200203031123 is a deficient number, since it is larger than the sum of its proper divisors (21492637).

200203031123 is an equidigital number, since it uses as much as digits as its factorization.

200203031123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21492636.

The product of its (nonzero) digits is 216, while the sum is 17.

Adding to 200203031123 its reverse (321130302002), we get a palindrome (521333333125).

The spelling of 200203031123 in words is "two hundred billion, two hundred three million, thirty-one thousand, one hundred twenty-three".