2111311144 has 8 divisors (see below), whose sum is σ = 3958708410. Its totient is φ = 1055655568.

The previous prime is 2111311129. The next prime is 2111311177. The reversal of 2111311144 is 4411131112.

It can be written as a sum of positive squares in only one way, i.e., 1308268900 + 803042244 = 36170^2 + 28338^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 131956939 + ... + 131956954.

Almost surely, 2^2111311144 is an apocalyptic number.

It is an amenable number.

2111311144 is a deficient number, since it is larger than the sum of its proper divisors (1847397266).

2111311144 is a wasteful number, since it uses less digits than its factorization.

2111311144 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 263913899 (or 263913895 counting only the distinct ones).

The product of its digits is 96, while the sum is 19.

The square root of 2111311144 is about 45949.0059087245. The cubic root of 2111311144 is about 1282.8742263459.

Adding to 2111311144 its reverse (4411131112), we get a palindrome (6522442256).

The spelling of 2111311144 in words is "two billion, one hundred eleven million, three hundred eleven thousand, one hundred forty-four".