823238071 has 2 divisors, whose sum is σ = 823238072. Its totient is φ = 823238070.

The previous prime is 823238021. The next prime is 823238089. The reversal of 823238071 is 170832328.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 823238071 - 2⁹ = 823237559 is a prime.

It is a super-3 number, since 3×823238071³ (a number of 28 digits) contains 333 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (823238021) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 411619035 + 411619036.

It is an arithmetic number, because the mean of its divisors is an integer number (411619036).

Almost surely, 2^823238071 is an apocalyptic number.

823238071 is a deficient number, since it is larger than the sum of its proper divisors (1).

823238071 is an equidigital number, since it uses as much as digits as its factorization.

823238071 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 16128, while the sum is 34.

The square root of 823238071 is about 28692.1255922248. The cubic root of 823238071 is about 937.2205777278.

The spelling of 823238071 in words is "eight hundred twenty-three million, two hundred thirty-eight thousand, seventy-one".