381433 has 12 divisors (see below), whose sum is σ = 431148. Its totient is φ = 336960.

The previous prime is 381419. The next prime is 381439. The reversal of 381433 is 334183.

It can be written as a sum of positive squares in 6 ways, for example, as 76729 + 304704 = 277^2 + 552^2 .

It is not a de Polignac number, because 381433 - 2⁵ = 381401 is a prime.

It is a super-2 number, since 2×381433² = 290982266978, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (381439) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 6223 + ... + 6283.

It is an arithmetic number, because the mean of its divisors is an integer number (35929).

2³⁸¹⁴³³ is an apocalyptic number.

It is an amenable number.

381433 is a deficient number, since it is larger than the sum of its proper divisors (49715).

381433 is a wasteful number, since it uses less digits than its factorization.

381433 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 124 (or 111 counting only the distinct ones).

The product of its digits is 864, while the sum is 22.

The square root of 381433 is about 617.6026230514. The cubic root of 381433 is about 72.5224979722.

The spelling of 381433 in words is "three hundred eighty-one thousand, four hundred thirty-three".