123219 has 6 divisors (see below), whose sum is σ = 177996. Its totient is φ = 82140.

The previous prime is 123217. The next prime is 123229. The reversal of 123219 is 912321.

It is a happy number.

It is not a de Polignac number, because 123219 - 2¹ = 123217 is a prime.

It is a super-3 number, since 3×123219³ = 5612473383337377, which contains 333 as substring. Note that it is a super-d number also for d = 2.

It is an Ulam number.

It is a plaindrome in base 15.

It is not an unprimeable number, because it can be changed into a prime (123217) 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, 6837 + ... + 6854.

It is an arithmetic number, because the mean of its divisors is an integer number (29666).

2¹²³²¹⁹ is an apocalyptic number.

123219 is a deficient number, since it is larger than the sum of its proper divisors (54777).

123219 is a wasteful number, since it uses less digits than its factorization.

123219 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13697 (or 13694 counting only the distinct ones).

The product of its digits is 108, while the sum is 18.

The square root of 123219 is about 351.0256400892. The cubic root of 123219 is about 49.7613965121.

Subtracting from 123219 its sum of digits (18), we obtain a square (123201 = 351²).

It can be divided in two parts, 12321 and 9, that multiplied together give a square (110889 = 333²).

The spelling of 123219 in words is "one hundred twenty-three thousand, two hundred nineteen".