812381423 has 8 divisors (see below), whose sum is σ = 977301120. Its totient is φ = 659678040.

The previous prime is 812381399. The next prime is 812381429. The reversal of 812381423 is 324183218.

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

It is a de Polignac number, because none of the positive numbers 2^k-812381423 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 812381423.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (812381429) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3053933 + ... + 3054198.

It is an arithmetic number, because the mean of its divisors is an integer number (122162640).

Almost surely, 2^812381423 is an apocalyptic number.

812381423 is a deficient number, since it is larger than the sum of its proper divisors (164919697).

812381423 is a wasteful number, since it uses less digits than its factorization.

812381423 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6108157.

The product of its digits is 9216, while the sum is 32.

The square root of 812381423 is about 28502.3055734093. The cubic root of 812381423 is about 933.0823931522.

The spelling of 812381423 in words is "eight hundred twelve million, three hundred eighty-one thousand, four hundred twenty-three".