1381227 has 4 divisors (see below), whose sum is σ = 1841640. Its totient is φ = 920816.

The previous prime is 1381217. The next prime is 1381229. The reversal of 1381227 is 7221831.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 7221831 = 3 ⋅2407277.

It is a cyclic number.

It is not a de Polignac number, because 1381227 - 2⁸ = 1380971 is a prime.

It is a D-number.

It is a junction number, because it is equal to n+sod(n) for n = 1381197 and 1381206.

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, 230202 + ... + 230207.

It is an arithmetic number, because the mean of its divisors is an integer number (460410).

2^1381227 is an apocalyptic number.

1381227 is a deficient number, since it is larger than the sum of its proper divisors (460413).

1381227 is an equidigital number, since it uses as much as digits as its factorization.

1381227 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 460412.

The product of its digits is 672, while the sum is 24.

The square root of 1381227 is about 1175.2561422941. The cubic root of 1381227 is about 111.3666150832.

The spelling of 1381227 in words is "one million, three hundred eighty-one thousand, two hundred twenty-seven".