200031123311 has 16 divisors (see below), whose sum is σ = 207897984000. Its totient is φ = 192255379200.

The previous prime is 200031123293. The next prime is 200031123317. The reversal of 200031123311 is 113321130002.

It is a cyclic number.

It is not a de Polignac number, because 200031123311 - 2⁶ = 200031123247 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 200031123311.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (200031123317) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4478015 + ... + 4522463.

It is an arithmetic number, because the mean of its divisors is an integer number (12993624000).

Almost surely, 2^200031123311 is an apocalyptic number.

200031123311 is a deficient number, since it is larger than the sum of its proper divisors (7866860689).

200031123311 is a wasteful number, since it uses less digits than its factorization.

200031123311 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45470.

The product of its (nonzero) digits is 108, while the sum is 17.

Adding to 200031123311 its reverse (113321130002), we get a palindrome (313352253313).

The spelling of 200031123311 in words is "two hundred billion, thirty-one million, one hundred twenty-three thousand, three hundred eleven".