2131211323 has 8 divisors (see below), whose sum is σ = 2244211200. Its totient is φ = 2018294568.

The previous prime is 2131211311. The next prime is 2131211353. The reversal of 2131211323 is 3231121312.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 2131211323 - 2⁹ = 2131210811 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (19).

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 2131211323.

It is not an unprimeable number, because it can be changed into a prime (2131211353) 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 7 ways as a sum of consecutive naturals, for example, 35838 + ... + 74476.

It is an arithmetic number, because the mean of its divisors is an integer number (280526400).

Almost surely, 2^2131211323 is an apocalyptic number.

2131211323 is a deficient number, since it is larger than the sum of its proper divisors (112999877).

2131211323 is a wasteful number, since it uses less digits than its factorization.

2131211323 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41561.

The product of its digits is 216, while the sum is 19.

The square root of 2131211323 is about 46165.0443842525. The cubic root of 2131211323 is about 1286.8922090309.

Adding to 2131211323 its reverse (3231121312), we get a palindrome (5362332635).

The spelling of 2131211323 in words is "two billion, one hundred thirty-one million, two hundred eleven thousand, three hundred twenty-three".