2303623 has 4 divisors (see below), whose sum is σ = 2632720. Its totient is φ = 1974528.

The previous prime is 2303621. The next prime is 2303627. The reversal of 2303623 is 3263032.

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

It is a cyclic number.

It is not a de Polignac number, because 2303623 - 2¹ = 2303621 is a prime.

It is a super-2 number, since 2×2303623² = 10613357852258, which contains 22 as substring.

It is a d-powerful number, because it can be written as 2³ + 3⁸ + 0 + 3¹¹ + 6⁴ + 2¹⁹ + 3¹³ .

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 2303623.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2303621) 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, 164538 + ... + 164551.

It is an arithmetic number, because the mean of its divisors is an integer number (658180).

2^2303623 is an apocalyptic number.

2303623 is a deficient number, since it is larger than the sum of its proper divisors (329097).

2303623 is an equidigital number, since it uses as much as digits as its factorization.

2303623 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 329096.

The product of its (nonzero) digits is 648, while the sum is 19.

The square root of 2303623 is about 1517.7690865214. The cubic root of 2303623 is about 132.0698857053.

Adding to 2303623 its reverse (3263032), we get a palindrome (5566655).

It can be divided in two parts, 2303 and 623, that added together give a triangular number (2926 = T₇₆).

The spelling of 2303623 in words is "two million, three hundred three thousand, six hundred twenty-three".