2103131311 has 4 divisors (see below), whose sum is σ = 2111128272. Its totient is φ = 2095134352.

The previous prime is 2103131297. The next prime is 2103131363. The reversal of 2103131311 is 1131313012.

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 2103131311 - 2¹³ = 2103123119 is a prime.

It is a super-2 number, since 2×2103131311² = 8846322622617157442, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2103131411) 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, 3998086 + ... + 3998611.

It is an arithmetic number, because the mean of its divisors is an integer number (527782068).

Almost surely, 2^2103131311 is an apocalyptic number.

2103131311 is a deficient number, since it is larger than the sum of its proper divisors (7996961).

2103131311 is an equidigital number, since it uses as much as digits as its factorization.

2103131311 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7996960.

The product of its (nonzero) digits is 54, while the sum is 16.

The square root of 2103131311 is about 45859.9096270370. The cubic root of 2103131311 is about 1281.2153396263.

Adding to 2103131311 its reverse (1131313012), we get a palindrome (3234444323).

The spelling of 2103131311 in words is "two billion, one hundred three million, one hundred thirty-one thousand, three hundred eleven".