3231033113221 has 4 divisors (see below), whose sum is σ = 3231440206092. Its totient is φ = 3230626020352.

The previous prime is 3231033113219. The next prime is 3231033113233. The reversal of 3231033113221 is 1223113301323.

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 2637148644900 + 593884468321 = 1623930^2 + 770639^2 .

It is a cyclic number.

It is not a de Polignac number, because 3231033113221 - 2¹ = 3231033113219 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3231033183221) 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, 203534530 + ... + 203550403.

It is an arithmetic number, because the mean of its divisors is an integer number (807860051523).

Almost surely, 2^{3231033113221} is an apocalyptic number.

It is an amenable number.

3231033113221 is a deficient number, since it is larger than the sum of its proper divisors (407092871).

3231033113221 is an equidigital number, since it uses as much as digits as its factorization.

3231033113221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 407092870.

The product of its (nonzero) digits is 1944, while the sum is 25.

Adding to 3231033113221 its reverse (1223113301323), we get a palindrome (4454146414544).

The spelling of 3231033113221 in words is "three trillion, two hundred thirty-one billion, thirty-three million, one hundred thirteen thousand, two hundred twenty-one".