1020321943 has 2 divisors, whose sum is σ = 1020321944. Its totient is φ = 1020321942.

The previous prime is 1020321889. The next prime is 1020321947. The reversal of 1020321943 is 3491230201.

1020321943 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 is a cyclic number.

It is not a de Polignac number, because 1020321943 - 2⁹ = 1020321431 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1020321947) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 510160971 + 510160972.

It is an arithmetic number, because the mean of its divisors is an integer number (510160972).

Almost surely, 2^1020321943 is an apocalyptic number.

1020321943 is a deficient number, since it is larger than the sum of its proper divisors (1).

1020321943 is an equidigital number, since it uses as much as digits as its factorization.

1020321943 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1296, while the sum is 25.

The square root of 1020321943 is about 31942.4786608679. The cubic root of 1020321943 is about 1006.7286053264.

The spelling of 1020321943 in words is "one billion, twenty million, three hundred twenty-one thousand, nine hundred forty-three".