82391723 has 2 divisors, whose sum is σ = 82391724. Its totient is φ = 82391722.

The previous prime is 82391717. The next prime is 82391753. The reversal of 82391723 is 32719328.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-82391723 is a prime.

It is not a weakly prime, because it can be changed into another prime (82391713) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 41195861 + 41195862.

It is an arithmetic number, because the mean of its divisors is an integer number (41195862).

Almost surely, 2^82391723 is an apocalyptic number.

82391723 is a deficient number, since it is larger than the sum of its proper divisors (1).

82391723 is an equidigital number, since it uses as much as digits as its factorization.

82391723 is an evil number, because the sum of its binary digits is even.

The product of its digits is 18144, while the sum is 35.

The square root of 82391723 is about 9076.9886526314. The cubic root of 82391723 is about 435.1388520493.

The spelling of 82391723 in words is "eighty-two million, three hundred ninety-one thousand, seven hundred twenty-three".