2311842 has 32 divisors (see below), whose sum is σ = 5044032. Its totient is φ = 702144.

The previous prime is 2311823. The next prime is 2311843. The reversal of 2311842 is 2481132.

It is a super-2 number, since 2×2311842² = 10689226865928, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (2311843) 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, 8208 + ... + 8484.

It is an arithmetic number, because the mean of its divisors is an integer number (157626).

2^2311842 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2311842, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2522016).

2311842 is an abundant number, since it is smaller than the sum of its proper divisors (2732190).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2311842 is a wasteful number, since it uses less digits than its factorization.

2311842 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 402.

The product of its digits is 384, while the sum is 21.

The square root of 2311842 is about 1520.4742681151. The cubic root of 2311842 is about 132.2267681458.

Adding to 2311842 its reverse (2481132), we get a palindrome (4792974).

The spelling of 2311842 in words is "two million, three hundred eleven thousand, eight hundred forty-two".