2331861 has 24 divisors (see below), whose sum is σ = 3748320. Its totient is φ = 1284192.

The previous prime is 2331859. The next prime is 2331869. The reversal of 2331861 is 1681332.

2331861 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 2331861 - 2¹ = 2331859 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2331869) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 3990 + ... + 4536.

It is an arithmetic number, because the mean of its divisors is an integer number (156180).

2^2331861 is an apocalyptic number.

2331861 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

It is an amenable number.

2331861 is a deficient number, since it is larger than the sum of its proper divisors (1416459).

2331861 is a wasteful number, since it uses less digits than its factorization.

2331861 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 593 (or 586 counting only the distinct ones).

The product of its digits is 864, while the sum is 24.

The square root of 2331861 is about 1527.0432213922. The cubic root of 2331861 is about 132.6073367812.

The spelling of 2331861 in words is "two million, three hundred thirty-one thousand, eight hundred sixty-one".