2331212113 has 2 divisors, whose sum is σ = 2331212114. Its totient is φ = 2331212112.

The previous prime is 2331212111. The next prime is 2331212161. The reversal of 2331212113 is 3112121332.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1485100369 + 846111744 = 38537^2 + 29088^2 .

It is a cyclic number.

It is not a de Polignac number, because 2331212113 - 2¹ = 2331212111 is a prime.

Together with 2331212111, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (2331212111) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1165606056 + 1165606057.

It is an arithmetic number, because the mean of its divisors is an integer number (1165606057).

Almost surely, 2^2331212113 is an apocalyptic number.

It is an amenable number.

2331212113 is a deficient number, since it is larger than the sum of its proper divisors (1).

2331212113 is an equidigital number, since it uses as much as digits as its factorization.

2331212113 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 2331212113 is about 48282.6274450759. The cubic root of 2331212113 is about 1325.9503542477.

Adding to 2331212113 its reverse (3112121332), we get a palindrome (5443333445).

The spelling of 2331212113 in words is "two billion, three hundred thirty-one million, two hundred twelve thousand, one hundred thirteen".