813409023 has 16 divisors (see below), whose sum is σ = 1282222080. Its totient is φ = 448777056.

The previous prime is 813409021. The next prime is 813409097. The reversal of 813409023 is 320904318.

It is not a de Polignac number, because 813409023 - 2¹ = 813409021 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (813409021) 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 15 ways as a sum of consecutive naturals, for example, 667215 + ... + 668432.

It is an arithmetic number, because the mean of its divisors is an integer number (80138880).

Almost surely, 2^813409023 is an apocalyptic number.

813409023 is a deficient number, since it is larger than the sum of its proper divisors (468813057).

813409023 is a wasteful number, since it uses less digits than its factorization.

813409023 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1335686.

The product of its (nonzero) digits is 5184, while the sum is 30.

The square root of 813409023 is about 28520.3264883136. The cubic root of 813409023 is about 933.4756531980.

The spelling of 813409023 in words is "eight hundred thirteen million, four hundred nine thousand, twenty-three".