2111434311 has 16 divisors (see below), whose sum is σ = 3219327488. Its totient is φ = 1205820000.

The previous prime is 2111434271. The next prime is 2111434319. The reversal of 2111434311 is 1134341112.

It is not a de Polignac number, because 2111434311 - 2²⁶ = 2044325447 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2111434319) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7686 + ... + 65436.

It is an arithmetic number, because the mean of its divisors is an integer number (201207968).

Almost surely, 2^2111434311 is an apocalyptic number.

2111434311 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

2111434311 is a deficient number, since it is larger than the sum of its proper divisors (1107893177).

2111434311 is a wasteful number, since it uses less digits than its factorization.

2111434311 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 59502.

The product of its digits is 288, while the sum is 21.

The square root of 2111434311 is about 45950.3461466832. The cubic root of 2111434311 is about 1282.8991720924.

Adding to 2111434311 its reverse (1134341112), we get a palindrome (3245775423).

The spelling of 2111434311 in words is "two billion, one hundred eleven million, four hundred thirty-four thousand, three hundred eleven".