3231311121 has 24 divisors (see below), whose sum is σ = 4811550120. Its totient is φ = 2088135936.

The previous prime is 3231311119. The next prime is 3231311123. The reversal of 3231311121 is 1211131323.

3231311121 is a `hidden beast` number, since 3 + 231 + 311 + 121 = 666.

It is an interprime number because it is at equal distance from previous prime (3231311119) and next prime (3231311123).

It can be written as a sum of positive squares in 4 ways, for example, as 1052288721 + 2179022400 = 32439^2 + 46680^2 .

It is not a de Polignac number, because 3231311121 - 2¹ = 3231311119 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 3231311094 and 3231311103.

It is not an unprimeable number, because it can be changed into a prime (3231311123) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 71541 + ... + 107613.

It is an arithmetic number, because the mean of its divisors is an integer number (200481255).

Almost surely, 2^3231311121 is an apocalyptic number.

It is an amenable number.

3231311121 is a deficient number, since it is larger than the sum of its proper divisors (1580238999).

3231311121 is a wasteful number, since it uses less digits than its factorization.

3231311121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36385 (or 36382 counting only the distinct ones).

The product of its digits is 108, while the sum is 18.

The square root of 3231311121 is about 56844.6226216693. The cubic root of 3231311121 is about 1478.4033061840.

Adding to 3231311121 its reverse (1211131323), we get a palindrome (4442442444).

It can be divided in two parts, 32313 and 11121, that added together give a palindrome (43434).

The spelling of 3231311121 in words is "three billion, two hundred thirty-one million, three hundred eleven thousand, one hundred twenty-one".