2131101331 has 4 divisors (see below), whose sum is σ = 2131205472. Its totient is φ = 2130997192.

The previous prime is 2131101263. The next prime is 2131101359. The reversal of 2131101331 is 1331011312.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 2131101331 - 2²¹ = 2129004179 is a prime.

It is a super-2 number, since 2×2131101331² = 9083185765979943122, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2131101431) 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, 10096 + ... + 66061.

It is an arithmetic number, because the mean of its divisors is an integer number (532801368).

Almost surely, 2^2131101331 is an apocalyptic number.

2131101331 is a deficient number, since it is larger than the sum of its proper divisors (104141).

2131101331 is an equidigital number, since it uses as much as digits as its factorization.

2131101331 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 104140.

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

The square root of 2131101331 is about 46163.8530779223. The cubic root of 2131101331 is about 1286.8700697774.

Adding to 2131101331 its reverse (1331011312), we get a palindrome (3462112643).

The spelling of 2131101331 in words is "two billion, one hundred thirty-one million, one hundred one thousand, three hundred thirty-one".