813203375 has 8 divisors (see below), whose sum is σ = 1014877968. Its totient is φ = 650562600.

The previous prime is 813203359. The next prime is 813203407. The reversal of 813203375 is 573302318.

It is not a de Polignac number, because 813203375 - 2⁴ = 813203359 is a prime.

It is a super-2 number, since 2×813203375² = 1322599458222781250, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

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, 3252689 + ... + 3252938.

It is an arithmetic number, because the mean of its divisors is an integer number (126859746).

Almost surely, 2^813203375 is an apocalyptic number.

813203375 is a deficient number, since it is larger than the sum of its proper divisors (201674593).

813203375 is an equidigital number, since it uses as much as digits as its factorization.

813203375 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6505642 (or 6505632 counting only the distinct ones).

The product of its (nonzero) digits is 15120, while the sum is 32.

The square root of 813203375 is about 28516.7209720893. The cubic root of 813203375 is about 933.3969787239.

The spelling of 813203375 in words is "eight hundred thirteen million, two hundred three thousand, three hundred seventy-five".