3123123321 has 8 divisors (see below), whose sum is σ = 4185967104. Its totient is φ = 2071180880.

The previous prime is 3123123319. The next prime is 3123123337. The reversal of 3123123321 is 1233213213.

3123123321 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 3123123321 - 2¹ = 3123123319 is a prime.

It is not an unprimeable number, because it can be changed into a prime (3123123301) 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, 2724666 + ... + 2725811.

It is an arithmetic number, because the mean of its divisors is an integer number (523245888).

Almost surely, 2^3123123321 is an apocalyptic number.

It is an amenable number.

3123123321 is a deficient number, since it is larger than the sum of its proper divisors (1062843783).

3123123321 is a wasteful number, since it uses less digits than its factorization.

3123123321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5450671.

The product of its digits is 648, while the sum is 21.

The square root of 3123123321 is about 55884.9113893902. The cubic root of 3123123321 is about 1461.7161468919.

Adding to 3123123321 its reverse (1233213213), we get a palindrome (4356336534).

The spelling of 3123123321 in words is "three billion, one hundred twenty-three million, one hundred twenty-three thousand, three hundred twenty-one".