2381523 has 4 divisors (see below), whose sum is σ = 3175368. Its totient is φ = 1587680.

The previous prime is 2381521. The next prime is 2381527. The reversal of 2381523 is 3251832.

2381523 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 is a cyclic number.

It is not a de Polignac number, because 2381523 - 2¹ = 2381521 is a prime.

It is a D-number.

It is a junction number, because it is equal to n+sod(n) for n = 2381493 and 2381502.

It is not an unprimeable number, because it can be changed into a prime (2381521) 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, 396918 + ... + 396923.

It is an arithmetic number, because the mean of its divisors is an integer number (793842).

2^2381523 is an apocalyptic number.

2381523 is a deficient number, since it is larger than the sum of its proper divisors (793845).

2381523 is an equidigital number, since it uses as much as digits as its factorization.

2381523 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 793844.

The product of its digits is 1440, while the sum is 24.

The square root of 2381523 is about 1543.2183902481. The cubic root of 2381523 is about 133.5421180354.

It can be divided in two parts, 23815 and 23, that multiplied together give a palindrome (547745).

The spelling of 2381523 in words is "two million, three hundred eighty-one thousand, five hundred twenty-three".