809325031 has 4 divisors (see below), whose sum is σ = 809459352. Its totient is φ = 809190712.

The previous prime is 809324981. The next prime is 809325037. The reversal of 809325031 is 130523908.

It is a happy number.

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 809325031 - 2⁹ = 809324519 is a prime.

It is a super-2 number, since 2×809325031² = 1310014011606301922, 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 = 809324984 and 809325002.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (809325037) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 57676 + ... + 70321.

It is an arithmetic number, because the mean of its divisors is an integer number (202364838).

Almost surely, 2^809325031 is an apocalyptic number.

809325031 is a deficient number, since it is larger than the sum of its proper divisors (134321).

809325031 is a wasteful number, since it uses less digits than its factorization.

809325031 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 134320.

The product of its (nonzero) digits is 6480, while the sum is 31.

The square root of 809325031 is about 28448.6384735720. The cubic root of 809325031 is about 931.9107556825.

Adding to 809325031 its reverse (130523908), we get a palindrome (939848939).

It can be divided in two parts, 8093 and 25031, that added together give a square (33124 = 182²).

The spelling of 809325031 in words is "eight hundred nine million, three hundred twenty-five thousand, thirty-one".