2131033321 has 4 divisors (see below), whose sum is σ = 2131167312. Its totient is φ = 2130899332.

The previous prime is 2131033273. The next prime is 2131033349. The reversal of 2131033321 is 1233301312.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 2131033321 - 2⁷ = 2131033193 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2131033621) 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, 39331 + ... + 76216.

It is an arithmetic number, because the mean of its divisors is an integer number (532791828).

Almost surely, 2^2131033321 is an apocalyptic number.

It is an amenable number.

2131033321 is a deficient number, since it is larger than the sum of its proper divisors (133991).

2131033321 is a wasteful number, since it uses less digits than its factorization.

2131033321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 133990.

The product of its (nonzero) digits is 324, while the sum is 19.

The square root of 2131033321 is about 46163.1164567558. The cubic root of 2131033321 is about 1286.8563803041.

Adding to 2131033321 its reverse (1233301312), we get a palindrome (3364334633).

The spelling of 2131033321 in words is "two billion, one hundred thirty-one million, thirty-three thousand, three hundred twenty-one".