1227381 has 16 divisors (see below), whose sum is σ = 1755840. Its totient is φ = 760320.

The previous prime is 1227379. The next prime is 1227407. The reversal of 1227381 is 1837221.

It is not a de Polignac number, because 1227381 - 2¹ = 1227379 is a prime.

It is a super-2 number, since 2×1227381² = 3012928238322, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1227301) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3301 + ... + 3653.

It is an arithmetic number, because the mean of its divisors is an integer number (109740).

2^1227381 is an apocalyptic number.

It is an amenable number.

1227381 is a deficient number, since it is larger than the sum of its proper divisors (528459).

1227381 is a wasteful number, since it uses less digits than its factorization.

1227381 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 436.

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

The square root of 1227381 is about 1107.8722850582. The cubic root of 1227381 is about 107.0680267335.

It can be divided in two parts, 122 and 7381, that added together give a triangular number (7503 = T₁₂₂).

The spelling of 1227381 in words is "one million, two hundred twenty-seven thousand, three hundred eighty-one".