1323220238 has 16 divisors (see below), whose sum is σ = 2000829600. Its totient is φ = 656297376.

The previous prime is 1323220237. The next prime is 1323220253. The reversal of 1323220238 is 8320223231.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1323220237) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 132695 + ... + 142317.

It is an arithmetic number, because the mean of its divisors is an integer number (125051850).

Almost surely, 2^1323220238 is an apocalyptic number.

1323220238 is a deficient number, since it is larger than the sum of its proper divisors (677609362).

1323220238 is a wasteful number, since it uses less digits than its factorization.

1323220238 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10171.

The product of its (nonzero) digits is 3456, while the sum is 26.

The square root of 1323220238 is about 36376.0943203088. The cubic root of 1323220238 is about 1097.8526255885.

Adding to 1323220238 its reverse (8320223231), we get a palindrome (9643443469).

The spelling of 1323220238 in words is "one billion, three hundred twenty-three million, two hundred twenty thousand, two hundred thirty-eight".