813580423 has 2 divisors, whose sum is σ = 813580424. Its totient is φ = 813580422.

The previous prime is 813580307. The next prime is 813580429. The reversal of 813580423 is 324085318.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 813580423 - 2¹³ = 813572231 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (813580429) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 406790211 + 406790212.

It is an arithmetic number, because the mean of its divisors is an integer number (406790212).

Almost surely, 2^813580423 is an apocalyptic number.

813580423 is a deficient number, since it is larger than the sum of its proper divisors (1).

813580423 is an equidigital number, since it uses as much as digits as its factorization.

813580423 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 23040, while the sum is 34.

The square root of 813580423 is about 28523.3312044719. The cubic root of 813580423 is about 933.5412153303.

The spelling of 813580423 in words is "eight hundred thirteen million, five hundred eighty thousand, four hundred twenty-three".