2207381 has 4 divisors (see below), whose sum is σ = 2408064. Its totient is φ = 2006700.

The previous prime is 2207377. The next prime is 2207389. The reversal of 2207381 is 1837022.

2207381 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 2207381 - 2² = 2207377 is a prime.

It is a super-2 number, since 2×2207381² = 9745061758322, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2207389) 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, 100325 + ... + 100346.

It is an arithmetic number, because the mean of its divisors is an integer number (602016).

2^2207381 is an apocalyptic number.

It is an amenable number.

2207381 is a deficient number, since it is larger than the sum of its proper divisors (200683).

2207381 is a wasteful number, since it uses less digits than its factorization.

2207381 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 200682.

The product of its (nonzero) digits is 672, while the sum is 23.

The square root of 2207381 is about 1485.7257485822. The cubic root of 2207381 is about 130.2044318035.

The spelling of 2207381 in words is "two million, two hundred seven thousand, three hundred eighty-one".