801585031 has 4 divisors (see below), whose sum is σ = 863245432. Its totient is φ = 739924632.

The previous prime is 801585023. The next prime is 801585077. The reversal of 801585031 is 130585108.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 801585031 - 2³ = 801585023 is a prime.

It is a super-2 number, since 2×801585031² = 1285077123846541922, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 801584984 and 801585002.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (801585431) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 30830181 + ... + 30830206.

It is an arithmetic number, because the mean of its divisors is an integer number (215811358).

Almost surely, 2^801585031 is an apocalyptic number.

801585031 is a deficient number, since it is larger than the sum of its proper divisors (61660401).

801585031 is a wasteful number, since it uses less digits than its factorization.

801585031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 61660400.

The product of its (nonzero) digits is 4800, while the sum is 31.

The square root of 801585031 is about 28312.2770366497. The cubic root of 801585031 is about 928.9304507817.

The spelling of 801585031 in words is "eight hundred one million, five hundred eighty-five thousand, thirty-one".