2131323 has 4 divisors (see below), whose sum is σ = 2841768. Its totient is φ = 1420880.

The previous prime is 2131321. The next prime is 2131361. The reversal of 2131323 is 3231312.

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 2131323 - 2¹ = 2131321 is a prime.

It is a D-number.

It is not an unprimeable number, because it can be changed into a prime (2131321) 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, 355218 + ... + 355223.

It is an arithmetic number, because the mean of its divisors is an integer number (710442).

2^2131323 is an apocalyptic number.

2131323 is a deficient number, since it is larger than the sum of its proper divisors (710445).

2131323 is an equidigital number, since it uses as much as digits as its factorization.

2131323 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 710444.

The product of its digits is 108, while the sum is 15.

The square root of 2131323 is about 1459.9051339043. The cubic root of 2131323 is about 128.6914686663.

Adding to 2131323 its reverse (3231312), we get a palindrome (5362635).

The spelling of 2131323 in words is "two million, one hundred thirty-one thousand, three hundred twenty-three".