2443381 has 4 divisors (see below), whose sum is σ = 2572000. Its totient is φ = 2314764.

The previous prime is 2443373. The next prime is 2443387. The reversal of 2443381 is 1833442.

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 not a de Polignac number, because 2443381 - 2³ = 2443373 is a prime.

It is a super-2 number, since 2×2443381² = 11940221422322, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2443387) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 64281 + ... + 64318.

It is an arithmetic number, because the mean of its divisors is an integer number (643000).

2^2443381 is an apocalyptic number.

It is an amenable number.

2443381 is a deficient number, since it is larger than the sum of its proper divisors (128619).

2443381 is a wasteful number, since it uses less digits than its factorization.

2443381 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 128618.

The product of its digits is 2304, while the sum is 25.

The square root of 2443381 is about 1563.1317922683. The cubic root of 2443381 is about 134.6884631528.

The spelling of 2443381 in words is "two million, four hundred forty-three thousand, three hundred eighty-one".