2113321131 has 8 divisors (see below), whose sum is σ = 3130846160. Its totient is φ = 1408880736.

The previous prime is 2113321123. The next prime is 2113321139. The reversal of 2113321131 is 1311233112.

2113321131 is a `hidden beast` number, since 211 + 3 + 321 + 131 = 666.

It is an interprime number because it is at equal distance from previous prime (2113321123) and next prime (2113321139).

It is not a de Polignac number, because 2113321131 - 2³ = 2113321123 is a prime.

It is a super-3 number, since 3×2113321131³ (a number of 29 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2113321139) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 39135550 + ... + 39135603.

It is an arithmetic number, because the mean of its divisors is an integer number (391355770).

Almost surely, 2^2113321131 is an apocalyptic number.

2113321131 is a deficient number, since it is larger than the sum of its proper divisors (1017525029).

2113321131 is an equidigital number, since it uses as much as digits as its factorization.

2113321131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 78271162 (or 78271156 counting only the distinct ones).

The product of its digits is 108, while the sum is 18.

The square root of 2113321131 is about 45970.8726369209. The cubic root of 2113321131 is about 1283.2811997862.

Adding to 2113321131 its reverse (1311233112), we get a palindrome (3424554243).

The spelling of 2113321131 in words is "two billion, one hundred thirteen million, three hundred twenty-one thousand, one hundred thirty-one".