2321031989 has 2 divisors, whose sum is σ = 2321031990. Its totient is φ = 2321031988.

The previous prime is 2321031967. The next prime is 2321032013. The reversal of 2321031989 is 9891301232.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2205899089 + 115132900 = 46967^2 + 10730^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2321031989 is a prime.

It is a super-2 number, since 2×2321031989² = 10774378987922592242, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2321031919) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1160515994 + 1160515995.

It is an arithmetic number, because the mean of its divisors is an integer number (1160515995).

Almost surely, 2^2321031989 is an apocalyptic number.

It is an amenable number.

2321031989 is a deficient number, since it is larger than the sum of its proper divisors (1).

2321031989 is an equidigital number, since it uses as much as digits as its factorization.

2321031989 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 23328, while the sum is 38.

The square root of 2321031989 is about 48177.0898768284. The cubic root of 2321031989 is about 1324.0174491437.

The spelling of 2321031989 in words is "two billion, three hundred twenty-one million, thirty-one thousand, nine hundred eighty-nine".