823142443141 has 4 divisors (see below), whose sum is σ = 840656112192. Its totient is φ = 805628774092.

The previous prime is 823142443099. The next prime is 823142443153. The reversal of 823142443141 is 141344241328.

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 823142443141 - 2¹³ = 823142434949 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 823142443141.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (823142443741) 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, 8756834455 + ... + 8756834548.

It is an arithmetic number, because the mean of its divisors is an integer number (210164028048).

Almost surely, 2^823142443141 is an apocalyptic number.

It is an amenable number.

823142443141 is a deficient number, since it is larger than the sum of its proper divisors (17513669051).

823142443141 is a wasteful number, since it uses less digits than its factorization.

823142443141 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17513669050.

The product of its digits is 73728, while the sum is 37.

Adding to 823142443141 its reverse (141344241328), we get a palindrome (964486684469).

The spelling of 823142443141 in words is "eight hundred twenty-three billion, one hundred forty-two million, four hundred forty-three thousand, one hundred forty-one".