1224320239 has 4 divisors (see below), whose sum is σ = 1224613840. Its totient is φ = 1224026640.

The previous prime is 1224320219. The next prime is 1224320257. The reversal of 1224320239 is 9320234221.

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 1224320239 - 2¹⁷ = 1224189167 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1224320219) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 140454 + ... + 148915.

It is an arithmetic number, because the mean of its divisors is an integer number (306153460).

Almost surely, 2^1224320239 is an apocalyptic number.

1224320239 is a deficient number, since it is larger than the sum of its proper divisors (293601).

1224320239 is an equidigital number, since it uses as much as digits as its factorization.

1224320239 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 293600.

The product of its (nonzero) digits is 5184, while the sum is 28.

The square root of 1224320239 is about 34990.2877810400. The cubic root of 1224320239 is about 1069.7895294533.

The spelling of 1224320239 in words is "one billion, two hundred twenty-four million, three hundred twenty thousand, two hundred thirty-nine".