2331009 has 6 divisors (see below), whose sum is σ = 3367026. Its totient is φ = 1554000.

The previous prime is 2330959. The next prime is 2331041. The reversal of 2331009 is 9001332.

It can be written as a sum of positive squares in only one way, i.e., 2241009 + 90000 = 1497^2 + 300^2 .

It is not a de Polignac number, because 2331009 - 2⁸ = 2330753 is a prime.

It is an Ulam number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 2330982 and 2331000.

It is not an unprimeable number, because it can be changed into a prime (2331089) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 129492 + ... + 129509.

It is an arithmetic number, because the mean of its divisors is an integer number (561171).

2^2331009 is an apocalyptic number.

It is an amenable number.

2331009 is a deficient number, since it is larger than the sum of its proper divisors (1036017).

2331009 is a wasteful number, since it uses less digits than its factorization.

2331009 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 259007 (or 259004 counting only the distinct ones).

The product of its (nonzero) digits is 162, while the sum is 18.

The square root of 2331009 is about 1526.7642254127. The cubic root of 2331009 is about 132.5911844156.

The spelling of 2331009 in words is "two million, three hundred thirty-one thousand, nine".