2002023523 has 4 divisors (see below), whose sum is σ = 2089068048. Its totient is φ = 1914979000.

The previous prime is 2002023487. The next prime is 2002023553. The reversal of 2002023523 is 3253202002.

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 2002023523 - 2⁹ = 2002023011 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 2002023523.

It is not an unprimeable number, because it can be changed into a prime (2002023553) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 43522228 + ... + 43522273.

It is an arithmetic number, because the mean of its divisors is an integer number (522267012).

Almost surely, 2^2002023523 is an apocalyptic number.

2002023523 is a gapful number since it is divisible by the number (23) formed by its first and last digit.

2002023523 is a deficient number, since it is larger than the sum of its proper divisors (87044525).

2002023523 is an equidigital number, since it uses as much as digits as its factorization.

2002023523 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 87044524.

The product of its (nonzero) digits is 720, while the sum is 19.

The square root of 2002023523 is about 44743.9775053582. The cubic root of 2002023523 is about 1260.3458198755.

Adding to 2002023523 its reverse (3253202002), we get a palindrome (5255225525).

The spelling of 2002023523 in words is "two billion, two million, twenty-three thousand, five hundred twenty-three".