2113122331 has 2 divisors, whose sum is σ = 2113122332. Its totient is φ = 2113122330.

The previous prime is 2113122307. The next prime is 2113122359. The reversal of 2113122331 is 1332213112.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2113122331 - 2⁷ = 2113122203 is a prime.

It is a super-2 number, since 2×2113122331² = 8930571971541747122, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 2113122299 and 2113122308.

It is not a weakly prime, because it can be changed into another prime (2113122301) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1056561165 + 1056561166.

It is an arithmetic number, because the mean of its divisors is an integer number (1056561166).

Almost surely, 2^2113122331 is an apocalyptic number.

2113122331 is a deficient number, since it is larger than the sum of its proper divisors (1).

2113122331 is an equidigital number, since it uses as much as digits as its factorization.

2113122331 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 216, while the sum is 19.

The square root of 2113122331 is about 45968.7103473656. The cubic root of 2113122331 is about 1283.2409591276.

Adding to 2113122331 its reverse (1332213112), we get a palindrome (3445335443).

The spelling of 2113122331 in words is "two billion, one hundred thirteen million, one hundred twenty-two thousand, three hundred thirty-one".