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80331823 = 1113561761
BaseRepresentation
bin1001100100111…
…00010000101111
312121011021112201
410302130100233
5131031104243
611545442331
71663544365
oct462342057
9177137481
1080331823
1141388540
1222aa03a7
1313848430
14a951635
1570bc04d
hex4c9c42f

80331823 has 8 divisors (see below), whose sum is σ = 94376016. Its totient is φ = 67411200.

The previous prime is 80331809. The next prime is 80331841. The reversal of 80331823 is 32813308.

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 80331823 - 213 = 80323631 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 80331791 and 80331800.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (80331803) 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 7 ways as a sum of consecutive naturals, for example, 280738 + ... + 281023.

It is an arithmetic number, because the mean of its divisors is an integer number (11797002).

Almost surely, 280331823 is an apocalyptic number.

80331823 is a deficient number, since it is larger than the sum of its proper divisors (14044193).

80331823 is a wasteful number, since it uses less digits than its factorization.

80331823 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 561785.

The product of its (nonzero) digits is 3456, while the sum is 28.

The square root of 80331823 is about 8962.8021845849. The cubic root of 80331823 is about 431.4818587132.

The spelling of 80331823 in words is "eighty million, three hundred thirty-one thousand, eight hundred twenty-three".

Divisors: 1 11 13 143 561761 6179371 7302893 80331823