1220331344 has 20 divisors (see below), whose sum is σ = 2364952800. Its totient is φ = 610020960.

The previous prime is 1220331311. The next prime is 1220331361. The reversal of 1220331344 is 4431330221.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 101357 + ... + 112755.

It is an arithmetic number, because the mean of its divisors is an integer number (118247640).

Almost surely, 2^1220331344 is an apocalyptic number.

It is an amenable number.

1220331344 is a deficient number, since it is larger than the sum of its proper divisors (1144621456).

1220331344 is a wasteful number, since it uses less digits than its factorization.

1220331344 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18098 (or 18092 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 23.

The square root of 1220331344 is about 34933.2412466980. The cubic root of 1220331344 is about 1068.6264566153.

Adding to 1220331344 its reverse (4431330221), we get a palindrome (5651661565).

The spelling of 1220331344 in words is "one billion, two hundred twenty million, three hundred thirty-one thousand, three hundred forty-four".