2381331 has 4 divisors (see below), whose sum is σ = 3175112. Its totient is φ = 1587552.

The previous prime is 2381329. The next prime is 2381339. The reversal of 2381331 is 1331832.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 2381331 - 2¹ = 2381329 is a prime.

It is a super-2 number, since 2×2381331² = 11341474663122, which contains 22 as substring.

It is a D-number.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2381298 and 2381307.

It is not an unprimeable number, because it can be changed into a prime (2381339) 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, 396886 + ... + 396891.

It is an arithmetic number, because the mean of its divisors is an integer number (793778).

2^2381331 is an apocalyptic number.

2381331 is a deficient number, since it is larger than the sum of its proper divisors (793781).

2381331 is an equidigital number, since it uses as much as digits as its factorization.

2381331 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 793780.

The product of its digits is 432, while the sum is 21.

The square root of 2381331 is about 1543.1561813375. The cubic root of 2381331 is about 133.5385291869.

The spelling of 2381331 in words is "two million, three hundred eighty-one thousand, three hundred thirty-one".