101987143 has 2 divisors, whose sum is σ = 101987144. Its totient is φ = 101987142.

The previous prime is 101987101. The next prime is 101987159. The reversal of 101987143 is 341789101.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 101987143 - 2¹³ = 101978951 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 101987099 and 101987108.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (101987843) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 50993571 + 50993572.

It is an arithmetic number, because the mean of its divisors is an integer number (50993572).

Almost surely, 2^101987143 is an apocalyptic number.

101987143 is a deficient number, since it is larger than the sum of its proper divisors (1).

101987143 is an equidigital number, since it uses as much as digits as its factorization.

101987143 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 6048, while the sum is 34.

The square root of 101987143 is about 10098.8684019547. The cubic root of 101987143 is about 467.2132405954.

The spelling of 101987143 in words is "one hundred one million, nine hundred eighty-seven thousand, one hundred forty-three".