2313211111 has 2 divisors, whose sum is σ = 2313211112. Its totient is φ = 2313211110.

The previous prime is 2313211099. The next prime is 2313211127. The reversal of 2313211111 is 1111123132.

It is a happy number.

2313211111 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an a-pointer prime, because the next prime (2313211127) can be obtained adding 2313211111 to its sum of digits (16).

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2313211111 - 2⁷ = 2313210983 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2313211141) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1156605555 + 1156605556.

It is an arithmetic number, because the mean of its divisors is an integer number (1156605556).

Almost surely, 2^2313211111 is an apocalyptic number.

2313211111 is a deficient number, since it is larger than the sum of its proper divisors (1).

2313211111 is an equidigital number, since it uses as much as digits as its factorization.

2313211111 is an evil number, because the sum of its binary digits is even.

The product of its digits is 36, while the sum is 16.

The square root of 2313211111 is about 48095.8533659608. The cubic root of 2313211111 is about 1322.5286528646.

Adding to 2313211111 its reverse (1111123132), we get a palindrome (3424334243).

It can be divided in two parts, 23132 and 11111, that added together give a palindrome (34243).

The spelling of 2313211111 in words is "two billion, three hundred thirteen million, two hundred eleven thousand, one hundred eleven".