2265403123 has 4 divisors (see below), whose sum is σ = 2267708688. Its totient is φ = 2263097560.

The previous prime is 2265403081. The next prime is 2265403157. The reversal of 2265403123 is 3213045622.

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 2265403123 - 2¹³ = 2265394931 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2265403091 and 2265403100.

It is not an unprimeable number, because it can be changed into a prime (2265403183) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1151308 + ... + 1153273.

It is an arithmetic number, because the mean of its divisors is an integer number (566927172).

Almost surely, 2^2265403123 is an apocalyptic number.

2265403123 is a deficient number, since it is larger than the sum of its proper divisors (2305565).

2265403123 is an equidigital number, since it uses as much as digits as its factorization.

2265403123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2305564.

The product of its (nonzero) digits is 8640, while the sum is 28.

The square root of 2265403123 is about 47596.2511443916. The cubic root of 2265403123 is about 1313.3540922292.

Adding to 2265403123 its reverse (3213045622), we get a palindrome (5478448745).

The spelling of 2265403123 in words is "two billion, two hundred sixty-five million, four hundred three thousand, one hundred twenty-three".