3231121121 has 4 divisors (see below), whose sum is σ = 3371604672. Its totient is φ = 3090637572.

The previous prime is 3231121111. The next prime is 3231121123. The reversal of 3231121121 is 1211211323.

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 3231121121 - 2¹⁰ = 3231120097 is a prime.

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 3231121121.

It is not an unprimeable number, because it can be changed into a prime (3231121123) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 70241741 + ... + 70241786.

It is an arithmetic number, because the mean of its divisors is an integer number (842901168).

Almost surely, 2^3231121121 is an apocalyptic number.

It is an amenable number.

3231121121 is a deficient number, since it is larger than the sum of its proper divisors (140483551).

3231121121 is a wasteful number, since it uses less digits than its factorization.

3231121121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 140483550.

The product of its digits is 72, while the sum is 17.

The square root of 3231121121 is about 56842.9513748187. The cubic root of 3231121121 is about 1478.3743290781.

Adding to 3231121121 its reverse (1211211323), we get a palindrome (4442332444).

The spelling of 3231121121 in words is "three billion, two hundred thirty-one million, one hundred twenty-one thousand, one hundred twenty-one".