2111012331 has 16 divisors (see below), whose sum is σ = 2830483968. Its totient is φ = 1399464000.

The previous prime is 2111012317. The next prime is 2111012333. The reversal of 2111012331 is 1332101112.

It is a happy number.

It is not a de Polignac number, because 2111012331 - 2⁷ = 2111012203 is a prime.

It is a super-2 number, since 2×2111012331² = 8912746123268107122, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 2111012331.

It is not an unprimeable number, because it can be changed into a prime (2111012333) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 423906 + ... + 428856.

It is an arithmetic number, because the mean of its divisors is an integer number (176905248).

Almost surely, 2^2111012331 is an apocalyptic number.

2111012331 is a deficient number, since it is larger than the sum of its proper divisors (719471637).

2111012331 is a wasteful number, since it uses less digits than its factorization.

2111012331 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5722.

The product of its (nonzero) digits is 36, while the sum is 15.

The square root of 2111012331 is about 45945.7542216906. The cubic root of 2111012331 is about 1282.8137019362.

Adding to 2111012331 its reverse (1332101112), we get a palindrome (3443113443).

The spelling of 2111012331 in words is "two billion, one hundred eleven million, twelve thousand, three hundred thirty-one".