813422811 has 8 divisors (see below), whose sum is σ = 1086212160. Its totient is φ = 541457672.

The previous prime is 813422801. The next prime is 813422833. The reversal of 813422811 is 118224318.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 813422811 - 2⁷ = 813422683 is a prime.

It is not an unprimeable number, because it can be changed into a prime (813422801) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 203745 + ... + 207698.

It is an arithmetic number, because the mean of its divisors is an integer number (135776520).

Almost surely, 2^813422811 is an apocalyptic number.

813422811 is a deficient number, since it is larger than the sum of its proper divisors (272789349).

813422811 is a wasteful number, since it uses less digits than its factorization.

813422811 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 412105.

The product of its digits is 3072, while the sum is 30.

The square root of 813422811 is about 28520.5682096272. The cubic root of 813422811 is about 933.4809275799.

The spelling of 813422811 in words is "eight hundred thirteen million, four hundred twenty-two thousand, eight hundred eleven".