1381333 has 4 divisors (see below), whose sum is σ = 1394848. Its totient is φ = 1367820.

The previous prime is 1381327. The next prime is 1381337. The reversal of 1381333 is 3331831.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1381333 is a prime.

It is an Ulam number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1381337) 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, 6603 + ... + 6808.

It is an arithmetic number, because the mean of its divisors is an integer number (348712).

2^1381333 is an apocalyptic number.

It is an amenable number.

1381333 is a deficient number, since it is larger than the sum of its proper divisors (13515).

1381333 is a wasteful number, since it uses less digits than its factorization.

1381333 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13514.

The product of its digits is 648, while the sum is 22.

The square root of 1381333 is about 1175.3012379811. The cubic root of 1381333 is about 111.3694638930.

The spelling of 1381333 in words is "one million, three hundred eighty-one thousand, three hundred thirty-three".