805745031 has 32 divisors (see below), whose sum is σ = 1334000640. Its totient is φ = 421231104.

The previous prime is 805745021. The next prime is 805745063. The reversal of 805745031 is 130547508.

It is not a de Polignac number, because 805745031 - 2⁹ = 805744519 is a prime.

It is a super-2 number, since 2×805745031² = 1298450109962381922, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 805744983 and 805745001.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (805745011) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 17790 + ... + 43908.

It is an arithmetic number, because the mean of its divisors is an integer number (41687520).

Almost surely, 2^805745031 is an apocalyptic number.

805745031 is a deficient number, since it is larger than the sum of its proper divisors (528255609).

805745031 is a wasteful number, since it uses less digits than its factorization.

805745031 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26255.

The product of its (nonzero) digits is 16800, while the sum is 33.

The square root of 805745031 is about 28385.6483279843. The cubic root of 805745031 is about 930.5346411340.

The spelling of 805745031 in words is "eight hundred five million, seven hundred forty-five thousand, thirty-one".