811312850 has 36 divisors (see below), whose sum is σ = 1528335774. Its totient is φ = 320394240.

The previous prime is 811312823. The next prime is 811312861. The reversal of 811312850 is 58213118.

811312850 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 9 ways, for example, as 347039641 + 464273209 = 18629^2 + 21547^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 1983446 + ... + 1983854.

Almost surely, 2^811312850 is an apocalyptic number.

811312850 is a deficient number, since it is larger than the sum of its proper divisors (717022924).

811312850 is an equidigital number, since it uses as much as digits as its factorization.

811312850 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 927 (or 513 counting only the distinct ones).

The product of its (nonzero) digits is 1920, while the sum is 29.

The square root of 811312850 is about 28483.5540268415. The cubic root of 811312850 is about 932.6731009526.

Adding to 811312850 its reverse (58213118), we get a palindrome (869525968).

The spelling of 811312850 in words is "eight hundred eleven million, three hundred twelve thousand, eight hundred fifty".