123223009 has 16 divisors (see below), whose sum is σ = 151925760. Its totient is φ = 97323840.

The previous prime is 123223007. The next prime is 123223031. The reversal of 123223009 is 900322321.

It is a cyclic number.

It is not a de Polignac number, because 123223009 - 2¹ = 123223007 is a prime.

It is not an unprimeable number, because it can be changed into a prime (123223003) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 84912 + ... + 86350.

It is an arithmetic number, because the mean of its divisors is an integer number (9495360).

Almost surely, 2^123223009 is an apocalyptic number.

It is an amenable number.

123223009 is a deficient number, since it is larger than the sum of its proper divisors (28702751).

123223009 is a wasteful number, since it uses less digits than its factorization.

123223009 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2400.

The product of its (nonzero) digits is 648, while the sum is 22.

The square root of 123223009 is about 11100.5859755240. The cubic root of 123223009 is about 497.6193617795.

The spelling of 123223009 in words is "one hundred twenty-three million, two hundred twenty-three thousand, nine".