811072319 has 16 divisors (see below), whose sum is σ = 860202720. Its totient is φ = 763593600.

The previous prime is 811072259. The next prime is 811072331. The reversal of 811072319 is 913270118.

It is a cyclic number.

It is not a de Polignac number, because 811072319 - 2²⁰ = 810023743 is a prime.

It is a super-2 number, since 2×811072319² = 1315676613296075522, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (811072349) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 194177 + ... + 198309.

It is an arithmetic number, because the mean of its divisors is an integer number (53762670).

Almost surely, 2^811072319 is an apocalyptic number.

811072319 is a deficient number, since it is larger than the sum of its proper divisors (49130401).

811072319 is a wasteful number, since it uses less digits than its factorization.

811072319 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4330.

The product of its (nonzero) digits is 3024, while the sum is 32.

The square root of 811072319 is about 28479.3314352707. The cubic root of 811072319 is about 932.5809215642.

The spelling of 811072319 in words is "eight hundred eleven million, seventy-two thousand, three hundred nineteen".