2315009 has 4 divisors (see below), whose sum is σ = 2451204. Its totient is φ = 2178816.

The previous prime is 2315003. The next prime is 2315023. The reversal of 2315009 is 9005132.

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 2166784 + 148225 = 1472^2 + 385^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2315009 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2315003) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 68072 + ... + 68105.

It is an arithmetic number, because the mean of its divisors is an integer number (612801).

2^2315009 is an apocalyptic number.

It is an amenable number.

2315009 is a deficient number, since it is larger than the sum of its proper divisors (136195).

2315009 is a wasteful number, since it uses less digits than its factorization.

2315009 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 136194.

The product of its (nonzero) digits is 270, while the sum is 20.

The square root of 2315009 is about 1521.5153630509. The cubic root of 2315009 is about 132.2871198911.

The spelling of 2315009 in words is "two million, three hundred fifteen thousand, nine".