1223354144 has 24 divisors (see below), whose sum is σ = 2449303920. Its totient is φ = 601308736.

The previous prime is 1223354137. The next prime is 1223354149. The reversal of 1223354144 is 4414533221.

It is not an unprimeable number, because it can be changed into a prime (1223354149) 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, 322094 + ... + 325869.

It is an arithmetic number, because the mean of its divisors is an integer number (102054330).

Almost surely, 2^1223354144 is an apocalyptic number.

It is an amenable number.

1223354144 is an abundant number, since it is smaller than the sum of its proper divisors (1225949776).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1223354144 is an equidigital number, since it uses as much as digits as its factorization.

1223354144 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 648032 (or 648024 counting only the distinct ones).

The product of its digits is 11520, while the sum is 29.

The square root of 1223354144 is about 34976.4798686203. The cubic root of 1223354144 is about 1069.5080697918.

Adding to 1223354144 its reverse (4414533221), we get a palindrome (5637887365).

The spelling of 1223354144 in words is "one billion, two hundred twenty-three million, three hundred fifty-four thousand, one hundred forty-four".