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80431 = 1323269
BaseRepresentation
bin10011101000101111
311002022221
4103220233
510033211
61420211
7453331
oct235057
9132287
1080431
115547a
123a667
132a7c0
1421451
1518c71
hex13a2f

80431 has 8 divisors (see below), whose sum is σ = 90720. Its totient is φ = 70752.

The previous prime is 80429. The next prime is 80447. The reversal of 80431 is 13408.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 80431 - 21 = 80429 is a prime.

It is a super-2 number, since 2×804312 = 12938291522, 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 (80471) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 165 + ... + 433.

It is an arithmetic number, because the mean of its divisors is an integer number (11340).

280431 is an apocalyptic number.

80431 is a deficient number, since it is larger than the sum of its proper divisors (10289).

80431 is a wasteful number, since it uses less digits than its factorization.

80431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 305.

The product of its (nonzero) digits is 96, while the sum is 16.

The square root of 80431 is about 283.6035965921. The cubic root of 80431 is about 43.1659353659.

Adding to 80431 its reverse (13408), we get a palindrome (93839).

The spelling of 80431 in words is "eighty thousand, four hundred thirty-one".

Divisors: 1 13 23 269 299 3497 6187 80431