1381223 has 4 divisors (see below), whose sum is σ = 1403928. Its totient is φ = 1358520.

The previous prime is 1381217. The next prime is 1381229. The reversal of 1381223 is 3221831.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 3221831 = 353 ⋅9127.

It is an interprime number because it is at equal distance from previous prime (1381217) and next prime (1381229).

It is a cyclic number.

It is not a de Polignac number, because 1381223 - 2⁴ = 1381207 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1381195 and 1381204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1381229) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11261 + ... + 11382.

It is an arithmetic number, because the mean of its divisors is an integer number (350982).

2^1381223 is an apocalyptic number.

1381223 is a deficient number, since it is larger than the sum of its proper divisors (22705).

1381223 is an equidigital number, since it uses as much as digits as its factorization.

1381223 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22704.

The product of its digits is 288, while the sum is 20.

The square root of 1381223 is about 1175.2544405362. The cubic root of 1381223 is about 111.3665075781.

The spelling of 1381223 in words is "one million, three hundred eighty-one thousand, two hundred twenty-three".