381033 has 6 divisors (see below), whose sum is σ = 550394. Its totient is φ = 254016.

The previous prime is 381019. The next prime is 381037. The reversal of 381033 is 330183.

It can be written as a sum of positive squares in only one way, i.e., 363609 + 17424 = 603^2 + 132^2 .

It is not a de Polignac number, because 381033 - 2⁵ = 381001 is a prime.

It is a super-2 number, since 2×381033² = 290372294178, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 380997 and 381015.

It is not an unprimeable number, because it can be changed into a prime (381037) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 21160 + ... + 21177.

2³⁸¹⁰³³ is an apocalyptic number.

It is an amenable number.

381033 is a deficient number, since it is larger than the sum of its proper divisors (169361).

381033 is a wasteful number, since it uses less digits than its factorization.

381033 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42343 (or 42340 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 18.

The square root of 381033 is about 617.2787052864. The cubic root of 381033 is about 72.4971382144.

The spelling of 381033 in words is "three hundred eighty-one thousand, thirty-three".