2131302323 has 4 divisors (see below), whose sum is σ = 2133931128. Its totient is φ = 2128673520.

The previous prime is 2131302247. The next prime is 2131302347. The reversal of 2131302323 is 3232031312.

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 2131302323 - 2¹⁴ = 2131285939 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2131302295 and 2131302304.

It is not an unprimeable number, because it can be changed into a prime (2131302623) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1313186 + ... + 1314807.

It is an arithmetic number, because the mean of its divisors is an integer number (533482782).

Almost surely, 2^2131302323 is an apocalyptic number.

2131302323 is a deficient number, since it is larger than the sum of its proper divisors (2628805).

2131302323 is an equidigital number, since it uses as much as digits as its factorization.

2131302323 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2628804.

The product of its (nonzero) digits is 648, while the sum is 20.

The square root of 2131302323 is about 46166.0299679320. The cubic root of 2131302323 is about 1286.9105249878.

Adding to 2131302323 its reverse (3232031312), we get a palindrome (5363333635).

The spelling of 2131302323 in words is "two billion, one hundred thirty-one million, three hundred two thousand, three hundred twenty-three".