823235401 has 4 divisors (see below), whose sum is σ = 866563600. Its totient is φ = 779907204.

The previous prime is 823235377. The next prime is 823235407. The reversal of 823235401 is 104532328.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 823235401 - 2⁹ = 823234889 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 823235401.

It is not an unprimeable number, because it can be changed into a prime (823235407) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 21664071 + ... + 21664108.

It is an arithmetic number, because the mean of its divisors is an integer number (216640900).

Almost surely, 2^823235401 is an apocalyptic number.

It is an amenable number.

823235401 is a deficient number, since it is larger than the sum of its proper divisors (43328199).

823235401 is a wasteful number, since it uses less digits than its factorization.

823235401 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43328198.

The product of its (nonzero) digits is 5760, while the sum is 28.

The square root of 823235401 is about 28692.0790637416. The cubic root of 823235401 is about 937.2195645006.

Adding to 823235401 its reverse (104532328), we get a palindrome (927767729).

The spelling of 823235401 in words is "eight hundred twenty-three million, two hundred thirty-five thousand, four hundred one".