101918143 has 2 divisors, whose sum is σ = 101918144. Its totient is φ = 101918142.

The previous prime is 101918101. The next prime is 101918149. The reversal of 101918143 is 341819101.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 101918143 - 2⁹ = 101917631 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (101918149) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 50959071 + 50959072.

It is an arithmetic number, because the mean of its divisors is an integer number (50959072).

Almost surely, 2^101918143 is an apocalyptic number.

101918143 is a deficient number, since it is larger than the sum of its proper divisors (1).

101918143 is an equidigital number, since it uses as much as digits as its factorization.

101918143 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 864, while the sum is 28.

The square root of 101918143 is about 10095.4515996066. The cubic root of 101918143 is about 467.1078515383.

The spelling of 101918143 in words is "one hundred one million, nine hundred eighteen thousand, one hundred forty-three".