2131111203 has 16 divisors (see below), whose sum is σ = 3064239360. Its totient is φ = 1309660704.

The previous prime is 2131111201. The next prime is 2131111247. The reversal of 2131111203 is 3021111312.

It is a happy number.

It is not a de Polignac number, because 2131111203 - 2¹ = 2131111201 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2131111201) 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, 8151 + ... + 65792.

It is an arithmetic number, because the mean of its divisors is an integer number (191514960).

Almost surely, 2^2131111203 is an apocalyptic number.

2131111203 is a deficient number, since it is larger than the sum of its proper divisors (933128157).

2131111203 is a wasteful number, since it uses less digits than its factorization.

2131111203 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 74698.

The product of its (nonzero) digits is 36, while the sum is 15.

The square root of 2131111203 is about 46163.9600012824. The cubic root of 2131111203 is about 1286.8720568504.

Adding to 2131111203 its reverse (3021111312), we get a palindrome (5152222515).

The spelling of 2131111203 in words is "two billion, one hundred thirty-one million, one hundred eleven thousand, two hundred three".