3231313121 has 16 divisors (see below), whose sum is σ = 3393964800. Its totient is φ = 3073792128.

The previous prime is 3231313103. The next prime is 3231313133. The reversal of 3231313121 is 1213131323.

It is a cyclic number.

It is not a de Polignac number, because 3231313121 - 2²⁶ = 3164204257 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 3231313093 and 3231313102.

It is not an unprimeable number, because it can be changed into a prime (3231313181) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 240251 + ... + 253343.

It is an arithmetic number, because the mean of its divisors is an integer number (212122800).

Almost surely, 2^3231313121 is an apocalyptic number.

It is an amenable number.

3231313121 is a deficient number, since it is larger than the sum of its proper divisors (162651679).

3231313121 is a wasteful number, since it uses less digits than its factorization.

3231313121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13288.

The product of its digits is 324, while the sum is 20.

The square root of 3231313121 is about 56844.6402134801. The cubic root of 3231313121 is about 1478.4036112001.

Adding to 3231313121 its reverse (1213131323), we get a palindrome (4444444444).

The spelling of 3231313121 in words is "three billion, two hundred thirty-one million, three hundred thirteen thousand, one hundred twenty-one".