3123214021 has 2 divisors, whose sum is σ = 3123214022. Its totient is φ = 3123214020.

The previous prime is 3123213983. The next prime is 3123214037. The reversal of 3123214021 is 1204123213.

It is a happy number.

3123214021 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2799573921 + 323640100 = 52911^2 + 17990^2 .

It is a cyclic number.

It is not a de Polignac number, because 3123214021 - 2²⁷ = 2988996293 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 3123214021.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3123214621) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1561607010 + 1561607011.

It is an arithmetic number, because the mean of its divisors is an integer number (1561607011).

Almost surely, 2^3123214021 is an apocalyptic number.

It is an amenable number.

3123214021 is a deficient number, since it is larger than the sum of its proper divisors (1).

3123214021 is an equidigital number, since it uses as much as digits as its factorization.

3123214021 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 288, while the sum is 19.

The square root of 3123214021 is about 55885.7228726622. The cubic root of 3123214021 is about 1461.7302968691.

Adding to 3123214021 its reverse (1204123213), we get a palindrome (4327337234).

The spelling of 3123214021 in words is "three billion, one hundred twenty-three million, two hundred fourteen thousand, twenty-one".