82011823 has 2 divisors, whose sum is σ = 82011824. Its totient is φ = 82011822.

The previous prime is 82011803. The next prime is 82011827. The reversal of 82011823 is 32811028.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-82011823 is a prime.

It is a super-2 number, since 2×82011823² = 13451878223566658, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (82011827) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 41005911 + 41005912.

It is an arithmetic number, because the mean of its divisors is an integer number (41005912).

Almost surely, 2^82011823 is an apocalyptic number.

82011823 is a deficient number, since it is larger than the sum of its proper divisors (1).

82011823 is an equidigital number, since it uses as much as digits as its factorization.

82011823 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 768, while the sum is 25.

The square root of 82011823 is about 9056.0379305743. The cubic root of 82011823 is about 434.4690275753.

The spelling of 82011823 in words is "eighty-two million, eleven thousand, eight hundred twenty-three".