813023430 has 16 divisors (see below), whose sum is σ = 1951256304. Its totient is φ = 216806240.

The previous prime is 813023423. The next prime is 813023467. The reversal of 813023430 is 34320318.

It is a super-2 number, since 2×813023430² = 1322014195457929800, which contains 22 as substring.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 813023430.

It is a congruent number.

It is an unprimeable number.

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 in 7 ways as a sum of consecutive naturals, for example, 13550361 + ... + 13550420.

It is an arithmetic number, because the mean of its divisors is an integer number (121953519).

Almost surely, 2^813023430 is an apocalyptic number.

813023430 is an abundant number, since it is smaller than the sum of its proper divisors (1138232874).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

813023430 is a wasteful number, since it uses less digits than its factorization.

813023430 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27100791.

The product of its (nonzero) digits is 1728, while the sum is 24.

The square root of 813023430 is about 28513.5657187943. The cubic root of 813023430 is about 933.3281265299.

Adding to 813023430 its reverse (34320318), we get a palindrome (847343748).

The spelling of 813023430 in words is "eight hundred thirteen million, twenty-three thousand, four hundred thirty".