2111313109 has 2 divisors, whose sum is σ = 2111313110. Its totient is φ = 2111313108.

The previous prime is 2111313101. The next prime is 2111313133. The reversal of 2111313109 is 9013131112.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1931163025 + 180150084 = 43945^2 + 13422^2 .

It is a cyclic number.

It is not a de Polignac number, because 2111313109 - 2³ = 2111313101 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 2111313109.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2111313101) 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, 1055656554 + 1055656555.

It is an arithmetic number, because the mean of its divisors is an integer number (1055656555).

Almost surely, 2^2111313109 is an apocalyptic number.

It is an amenable number.

2111313109 is a deficient number, since it is larger than the sum of its proper divisors (1).

2111313109 is an equidigital number, since it uses as much as digits as its factorization.

2111313109 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 162, while the sum is 22.

The square root of 2111313109 is about 45949.0272911190. The cubic root of 2111313109 is about 1282.8746243367.

It can be divided in two parts, 2 and 111313109, that added together give a palindrome (111313111).

The spelling of 2111313109 in words is "two billion, one hundred eleven million, three hundred thirteen thousand, one hundred nine".