100320943 has 2 divisors, whose sum is σ = 100320944. Its totient is φ = 100320942.

The previous prime is 100320937. The next prime is 100320971. The reversal of 100320943 is 349023001.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 100320943 - 2²¹ = 98223791 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (100320343) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 50160471 + 50160472.

It is an arithmetic number, because the mean of its divisors is an integer number (50160472).

Almost surely, 2^100320943 is an apocalyptic number.

100320943 is a deficient number, since it is larger than the sum of its proper divisors (1).

100320943 is an equidigital number, since it uses as much as digits as its factorization.

100320943 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 648, while the sum is 22.

The square root of 100320943 is about 10016.0342950691. The cubic root of 100320943 is about 464.6549148947.

Adding to 100320943 its reverse (349023001), we get a palindrome (449343944).

The spelling of 100320943 in words is "one hundred million, three hundred twenty thousand, nine hundred forty-three".