80005431 has 24 divisors (see below), whose sum is σ = 121677696. Its totient is φ = 46369840.

The previous prime is 80005381. The next prime is 80005441. The reversal of 80005431 is 13450008.

It is not a de Polignac number, because 80005431 - 2¹⁵ = 79972663 is a prime.

It is a super-2 number, since 2×80005431² = 12801737978991522, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 80005398 and 80005407.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (80005441) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 15166 + ... + 19748.

It is an arithmetic number, because the mean of its divisors is an integer number (5069904).

Almost surely, 2^80005431 is an apocalyptic number.

80005431 is a deficient number, since it is larger than the sum of its proper divisors (41672265).

80005431 is a wasteful number, since it uses less digits than its factorization.

80005431 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4643 (or 4620 counting only the distinct ones).

The product of its (nonzero) digits is 480, while the sum is 21.

The square root of 80005431 is about 8944.5755069763. The cubic root of 80005431 is about 430.8966883981.

Adding to 80005431 its reverse (13450008), we get a palindrome (93455439).

It can be divided in two parts, 8000 and 5431, that added together give a palindrome (13431).

The spelling of 80005431 in words is "eighty million, five thousand, four hundred thirty-one".