823078141 has 4 divisors (see below), whose sum is σ = 832326300. Its totient is φ = 813829984.

The previous prime is 823078127. The next prime is 823078187. The reversal of 823078141 is 141870328.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 383337241 + 439740900 = 19579^2 + 20970^2 .

It is a cyclic number.

It is not a de Polignac number, because 823078141 - 2²¹ = 820980989 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 823078097 and 823078106.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (823078111) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4623946 + ... + 4624123.

It is an arithmetic number, because the mean of its divisors is an integer number (208081575).

Almost surely, 2^823078141 is an apocalyptic number.

It is an amenable number.

823078141 is a deficient number, since it is larger than the sum of its proper divisors (9248159).

823078141 is an equidigital number, since it uses as much as digits as its factorization.

823078141 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9248158.

The product of its (nonzero) digits is 10752, while the sum is 34.

The square root of 823078141 is about 28689.3384552520. The cubic root of 823078141 is about 937.1598826913.

The spelling of 823078141 in words is "eight hundred twenty-three million, seventy-eight thousand, one hundred forty-one".