2371381 has 4 divisors (see below), whose sum is σ = 2510892. Its totient is φ = 2231872.

The previous prime is 2371361. The next prime is 2371423. The reversal of 2371381 is 1831732.

2371381 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.

It can be written as a sum of positive squares in 2 ways, for example, as 1664100 + 707281 = 1290^2 + 841^2 .

It is a cyclic number.

It is not a de Polignac number, because 2371381 - 2¹³ = 2363189 is a prime.

It is a super-2 number, since 2×2371381² = 11246895694322, 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 (2371351) 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, 69730 + ... + 69763.

It is an arithmetic number, because the mean of its divisors is an integer number (627723).

2^2371381 is an apocalyptic number.

It is an amenable number.

2371381 is a deficient number, since it is larger than the sum of its proper divisors (139511).

2371381 is a wasteful number, since it uses less digits than its factorization.

2371381 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 139510.

The product of its digits is 1008, while the sum is 25.

The square root of 2371381 is about 1539.9288944623. The cubic root of 2371381 is about 133.3522799465.

The spelling of 2371381 in words is "two million, three hundred seventy-one thousand, three hundred eighty-one".