381023 has 4 divisors (see below), whose sum is σ = 389928. Its totient is φ = 372120.

The previous prime is 381019. The next prime is 381037. The reversal of 381023 is 320183.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 320183 = 23 ⋅13921.

It is a cyclic number.

It is not a de Polignac number, because 381023 - 2² = 381019 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 380992 and 381010.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (381223) 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, 4388 + ... + 4473.

It is an arithmetic number, because the mean of its divisors is an integer number (97482).

2³⁸¹⁰²³ is an apocalyptic number.

381023 is a deficient number, since it is larger than the sum of its proper divisors (8905).

381023 is an equidigital number, since it uses as much as digits as its factorization.

381023 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8904.

The product of its (nonzero) digits is 144, while the sum is 17.

The square root of 381023 is about 617.2706051644. The cubic root of 381023 is about 72.4965039931.

The spelling of 381023 in words is "three hundred eighty-one thousand, twenty-three".