1381133 has 8 divisors (see below), whose sum is σ = 1500576. Its totient is φ = 1263600.

The previous prime is 1381111. The next prime is 1381141. The reversal of 1381133 is 3311831.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1381133 - 2⁶ = 1381069 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1381103) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1298 + ... + 2108.

It is an arithmetic number, because the mean of its divisors is an integer number (187572).

2^1381133 is an apocalyptic number.

1381133 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

It is an amenable number.

1381133 is a deficient number, since it is larger than the sum of its proper divisors (119443).

1381133 is a wasteful number, since it uses less digits than its factorization.

1381133 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 955.

The product of its digits is 216, while the sum is 20.

The square root of 1381133 is about 1175.2161503315. The cubic root of 1381133 is about 111.3640886582.

Adding to 1381133 its reverse (3311831), we get a palindrome (4692964).

It can be divided in two parts, 13 and 81133, that multiplied together give a square (1054729 = 1027²).

The spelling of 1381133 in words is "one million, three hundred eighty-one thousand, one hundred thirty-three".