3121412321 has 8 divisors (see below), whose sum is σ = 3287978400. Its totient is φ = 2955074400.

The previous prime is 3121412251. The next prime is 3121412323. The reversal of 3121412321 is 1232141213.

3121412321 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 3121412321 - 2²² = 3117218017 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 3121412293 and 3121412302.

It is not an unprimeable number, because it can be changed into a prime (3121412323) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 28580 + ... + 84021.

It is an arithmetic number, because the mean of its divisors is an integer number (410997300).

Almost surely, 2^3121412321 is an apocalyptic number.

It is an amenable number.

3121412321 is a deficient number, since it is larger than the sum of its proper divisors (166566079).

3121412321 is a wasteful number, since it uses less digits than its factorization.

3121412321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 114079.

The product of its digits is 288, while the sum is 20.

The square root of 3121412321 is about 55869.6010456491. The cubic root of 3121412321 is about 1461.4491648857.

Adding to 3121412321 its reverse (1232141213), we get a palindrome (4353553534).

The spelling of 3121412321 in words is "three billion, one hundred twenty-one million, four hundred twelve thousand, three hundred twenty-one".