656423303 has 4 divisors (see below), whose sum is σ = 656718720. Its totient is φ = 656127888.

The previous prime is 656423297. The next prime is 656423351. The reversal of 656423303 is 303324656.

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 656423303 - 2⁶ = 656423239 is a prime.

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 656423303.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (656423353) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 144350 + ... + 148827.

It is an arithmetic number, because the mean of its divisors is an integer number (164179680).

Almost surely, 2^656423303 is an apocalyptic number.

656423303 is a deficient number, since it is larger than the sum of its proper divisors (295417).

656423303 is a wasteful number, since it uses less digits than its factorization.

656423303 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 295416.

The product of its (nonzero) digits is 38880, while the sum is 32.

The square root of 656423303 is about 25620.7592198202. The cubic root of 656423303 is about 869.0831504693.

Adding to 656423303 its reverse (303324656), we get a palindrome (959747959).

The spelling of 656423303 in words is "six hundred fifty-six million, four hundred twenty-three thousand, three hundred three".