3123203989 has 2 divisors, whose sum is σ = 3123203990. Its totient is φ = 3123203988.

The previous prime is 3123203969. The next prime is 3123204013. The reversal of 3123203989 is 9893023213.

It is a happy number.

3123203989 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 3032154225 + 91049764 = 55065^2 + 9542^2 .

It is an emirp because it is prime and its reverse (9893023213) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 3123203989 - 2¹¹ = 3123201941 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3123203969) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1561601994 + 1561601995.

It is an arithmetic number, because the mean of its divisors is an integer number (1561601995).

Almost surely, 2^3123203989 is an apocalyptic number.

It is an amenable number.

3123203989 is a deficient number, since it is larger than the sum of its proper divisors (1).

3123203989 is an equidigital number, since it uses as much as digits as its factorization.

3123203989 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 69984, while the sum is 40.

The square root of 3123203989 is about 55885.6331180027. The cubic root of 3123203989 is about 1461.7287318046.

The spelling of 3123203989 in words is "three billion, one hundred twenty-three million, two hundred three thousand, nine hundred eighty-nine".