2311132321 has 4 divisors (see below), whose sum is σ = 2367501444. Its totient is φ = 2254763200.

The previous prime is 2311132319. The next prime is 2311132339. The reversal of 2311132321 is 1232311132.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 850363921 + 1460768400 = 29161^2 + 38220^2 .

It is a cyclic number.

It is not a de Polignac number, because 2311132321 - 2¹ = 2311132319 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2311132361) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 28184500 + ... + 28184581.

It is an arithmetic number, because the mean of its divisors is an integer number (591875361).

Almost surely, 2^2311132321 is an apocalyptic number.

It is an amenable number.

2311132321 is a deficient number, since it is larger than the sum of its proper divisors (56369123).

2311132321 is an equidigital number, since it uses as much as digits as its factorization.

2311132321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 56369122.

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

The square root of 2311132321 is about 48074.2376018591. The cubic root of 2311132321 is about 1322.1323663221.

Adding to 2311132321 its reverse (1232311132), we get a palindrome (3543443453).

The spelling of 2311132321 in words is "two billion, three hundred eleven million, one hundred thirty-two thousand, three hundred twenty-one".