101993543 has 2 divisors, whose sum is σ = 101993544. Its totient is φ = 101993542.

The previous prime is 101993533. The next prime is 101993611. The reversal of 101993543 is 345399101.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 101993543 - 2²² = 97799239 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (101993513) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 50996771 + 50996772.

It is an arithmetic number, because the mean of its divisors is an integer number (50996772).

Almost surely, 2^101993543 is an apocalyptic number.

101993543 is a deficient number, since it is larger than the sum of its proper divisors (1).

101993543 is an equidigital number, since it uses as much as digits as its factorization.

101993543 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 14580, while the sum is 35.

The square root of 101993543 is about 10099.1852641686. The cubic root of 101993543 is about 467.2230134031.

The spelling of 101993543 in words is "one hundred one million, nine hundred ninety-three thousand, five hundred forty-three".