1381223224 has 16 divisors (see below), whose sum is σ = 2628448200. Its totient is φ = 680303712.

The previous prime is 1381223203. The next prime is 1381223227. The reversal of 1381223224 is 4223221831.

It is a junction number, because it is equal to n+sod(n) for n = 1381223192 and 1381223201.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1381223227) 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, 1287919 + ... + 1288990.

Almost surely, 2^1381223224 is an apocalyptic number.

It is an amenable number.

1381223224 is a deficient number, since it is larger than the sum of its proper divisors (1247224976).

1381223224 is a wasteful number, since it uses less digits than its factorization.

1381223224 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2576982 (or 2576978 counting only the distinct ones).

The product of its digits is 4608, while the sum is 28.

The square root of 1381223224 is about 37164.8116368158. The cubic root of 1381223224 is about 1113.6651359838.

The spelling of 1381223224 in words is "one billion, three hundred eighty-one million, two hundred twenty-three thousand, two hundred twenty-four".