2100203311 has 4 divisors (see below), whose sum is σ = 2151427824. Its totient is φ = 2048978800.

The previous prime is 2100203297. The next prime is 2100203321. The reversal of 2100203311 is 1133020012.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2100203311 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2100203291 and 2100203300.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2100203321) 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, 25612195 + ... + 25612276.

It is an arithmetic number, because the mean of its divisors is an integer number (537856956).

Almost surely, 2^2100203311 is an apocalyptic number.

2100203311 is a deficient number, since it is larger than the sum of its proper divisors (51224513).

2100203311 is an equidigital number, since it uses as much as digits as its factorization.

2100203311 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 51224512.

The product of its (nonzero) digits is 36, while the sum is 13.

The square root of 2100203311 is about 45827.9752007439. The cubic root of 2100203311 is about 1280.6204899762.

Adding to 2100203311 its reverse (1133020012), we get a palindrome (3233223323).

The spelling of 2100203311 in words is "two billion, one hundred million, two hundred three thousand, three hundred eleven".