85421323 has 4 divisors (see below), whose sum is σ = 91992208. Its totient is φ = 78850440.

The previous prime is 85421317. The next prime is 85421341. The reversal of 85421323 is 32312458.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-85421323 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 85421291 and 85421300.

It is not an unprimeable number, because it can be changed into a prime (85421353) 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, 3285423 + ... + 3285448.

It is an arithmetic number, because the mean of its divisors is an integer number (22998052).

Almost surely, 2^85421323 is an apocalyptic number.

85421323 is a deficient number, since it is larger than the sum of its proper divisors (6570885).

85421323 is a wasteful number, since it uses less digits than its factorization.

85421323 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6570884.

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

The square root of 85421323 is about 9242.3656603707. The cubic root of 85421323 is about 440.4082351002.

The spelling of 85421323 in words is "eighty-five million, four hundred twenty-one thousand, three hundred twenty-three".