2112831 has 24 divisors (see below), whose sum is σ = 3643440. Its totient is φ = 1206576.

The previous prime is 2112829. The next prime is 2112833. The reversal of 2112831 is 1382112.

It is an interprime number because it is at equal distance from previous prime (2112829) and next prime (2112833).

It is not a de Polignac number, because 2112831 - 2¹ = 2112829 is a prime.

It is a super-2 number, since 2×2112831² = 8928109669122, which contains 22 as substring.

2112831 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2112833) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 525 + ... + 2121.

It is an arithmetic number, because the mean of its divisors is an integer number (151810).

2^2112831 is an apocalyptic number.

2112831 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

2112831 is a deficient number, since it is larger than the sum of its proper divisors (1530609).

2112831 is a wasteful number, since it uses less digits than its factorization.

2112831 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1620 (or 1607 counting only the distinct ones).

The product of its digits is 96, while the sum is 18.

The square root of 2112831 is about 1453.5580483765. The cubic root of 2112831 is about 128.3181983988.

Adding to 2112831 its reverse (1382112), we get a palindrome (3494943).

The spelling of 2112831 in words is "two million, one hundred twelve thousand, eight hundred thirty-one".