2331121 has 4 divisors (see below), whose sum is σ = 2510452. Its totient is φ = 2151792.

The previous prime is 2331113. The next prime is 2331127. The reversal of 2331121 is 1211332.

2331121 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 1132096 + 1199025 = 1064^2 + 1095^2 .

It is a cyclic number.

It is not a de Polignac number, because 2331121 - 2³ = 2331113 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (13), and also a Moran number because the ratio is a prime number: 179317 = 2331121 / (2 + 3 + 3 + 1 + 1 + 2 + 1).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2331127) 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 3 ways as a sum of consecutive naturals, for example, 89646 + ... + 89671.

It is an arithmetic number, because the mean of its divisors is an integer number (627613).

2^2331121 is an apocalyptic number.

It is an amenable number.

2331121 is a deficient number, since it is larger than the sum of its proper divisors (179331).

2331121 is a wasteful number, since it uses less digits than its factorization.

2331121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 179330.

The product of its digits is 36, while the sum is 13.

The square root of 2331121 is about 1526.8009038509. The cubic root of 2331121 is about 132.5933079559.

Adding to 2331121 its reverse (1211332), we get a palindrome (3542453).

It can be divided in two parts, 23311 and 21, that added together give a palindrome (23332).

The spelling of 2331121 in words is "two million, three hundred thirty-one thousand, one hundred twenty-one".