2303523 has 6 divisors (see below), whose sum is σ = 3327324. Its totient is φ = 1535676.

The previous prime is 2303513. The next prime is 2303531. The reversal of 2303523 is 3253032.

It is a de Polignac number, because none of the positive numbers 2^k-2303523 is a prime.

2303523 is a lucky number.

It is a junction number, because it is equal to n+sod(n) for n = 2303496 and 2303505.

It is not an unprimeable number, because it can be changed into a prime (2303513) 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, 127965 + ... + 127982.

It is an arithmetic number, because the mean of its divisors is an integer number (554554).

2^2303523 is an apocalyptic number.

2303523 is a deficient number, since it is larger than the sum of its proper divisors (1023801).

2303523 is a wasteful number, since it uses less digits than its factorization.

2303523 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 255953 (or 255950 counting only the distinct ones).

The product of its (nonzero) digits is 540, while the sum is 18.

The square root of 2303523 is about 1517.7361430763. The cubic root of 2303523 is about 132.0679746317.

Adding to 2303523 its reverse (3253032), we get a palindrome (5556555).

The spelling of 2303523 in words is "two million, three hundred three thousand, five hundred twenty-three".