820381423 has 8 divisors (see below), whose sum is σ = 843597216. Its totient is φ = 797318400.

The previous prime is 820381421. The next prime is 820381459. The reversal of 820381423 is 324183028.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 820381423 - 2¹ = 820381421 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (820381421) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 27258 + ... + 48823.

It is an arithmetic number, because the mean of its divisors is an integer number (105449652).

Almost surely, 2^820381423 is an apocalyptic number.

820381423 is a deficient number, since it is larger than the sum of its proper divisors (23215793).

820381423 is a wasteful number, since it uses less digits than its factorization.

820381423 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 76385.

The product of its (nonzero) digits is 9216, while the sum is 31.

The square root of 820381423 is about 28642.3012867332. The cubic root of 820381423 is about 936.1352650929.

The spelling of 820381423 in words is "eight hundred twenty million, three hundred eighty-one thousand, four hundred twenty-three".