216703123 has 24 divisors (see below), whose sum is σ = 271531008. Its totient is φ = 169314912.

The previous prime is 216703073. The next prime is 216703127. The reversal of 216703123 is 321307612.

It is not a de Polignac number, because 216703123 - 2⁹ = 216702611 is a prime.

It is not an unprimeable number, because it can be changed into a prime (216703127) 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 23 ways as a sum of consecutive naturals, for example, 97086 + ... + 99292.

It is an arithmetic number, because the mean of its divisors is an integer number (11313792).

Almost surely, 2^216703123 is an apocalyptic number.

216703123 is a deficient number, since it is larger than the sum of its proper divisors (54827885).

216703123 is a wasteful number, since it uses less digits than its factorization.

216703123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2323 (or 2310 counting only the distinct ones).

The product of its (nonzero) digits is 1512, while the sum is 25.

The square root of 216703123 is about 14720.8397518620. The cubic root of 216703123 is about 600.6503346682.

The spelling of 216703123 in words is "two hundred sixteen million, seven hundred three thousand, one hundred twenty-three".