82011143 has 2 divisors, whose sum is σ = 82011144. Its totient is φ = 82011142.

The previous prime is 82011079. The next prime is 82011157. The reversal of 82011143 is 34111028.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 82011143 - 2⁶ = 82011079 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (82011343) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 41005571 + 41005572.

It is an arithmetic number, because the mean of its divisors is an integer number (41005572).

Almost surely, 2^82011143 is an apocalyptic number.

82011143 is a deficient number, since it is larger than the sum of its proper divisors (1).

82011143 is an equidigital number, since it uses as much as digits as its factorization.

82011143 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 192, while the sum is 20.

The square root of 82011143 is about 9056.0003864841. Note that the first 3 decimals coincide. The cubic root of 82011143 is about 434.4678267738.

The spelling of 82011143 in words is "eighty-two million, eleven thousand, one hundred forty-three".