2002131323 has 4 divisors (see below), whose sum is σ = 2005160928. Its totient is φ = 1999101720.

The previous prime is 2002131283. The next prime is 2002131331. The reversal of 2002131323 is 3231312002.

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 2002131323 - 2¹⁶ = 2002065787 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2002131823) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1513811 + ... + 1515132.

It is an arithmetic number, because the mean of its divisors is an integer number (501290232).

Almost surely, 2^2002131323 is an apocalyptic number.

2002131323 is a deficient number, since it is larger than the sum of its proper divisors (3029605).

2002131323 is an equidigital number, since it uses as much as digits as its factorization.

2002131323 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3029604.

The product of its (nonzero) digits is 216, while the sum is 17.

The square root of 2002131323 is about 44745.1821205367. The cubic root of 2002131323 is about 1260.3684407954.

Adding to 2002131323 its reverse (3231312002), we get a palindrome (5233443325).

The spelling of 2002131323 in words is "two billion, two million, one hundred thirty-one thousand, three hundred twenty-three".