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80281131 = 3719012011
BaseRepresentation
bin1001100100011…
…11111000101011
312121001201000020
410302033320223
5131022444011
611544411523
71663243530
oct462177053
9177051006
1080281131
1141353447
1222a76ba3
131382b338
14a93ad87
1570ac006
hex4c8fe2b

80281131 has 16 divisors (see below), whose sum is σ = 122458368. Its totient is φ = 45828000.

The previous prime is 80281127. The next prime is 80281139. The reversal of 80281131 is 13118208.

It is not a de Polignac number, because 80281131 - 22 = 80281127 is a prime.

It is a super-2 number, since 2×802811312 = 12890119989278322, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (80281139) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 38916 + ... + 40926.

It is an arithmetic number, because the mean of its divisors is an integer number (7653648).

Almost surely, 280281131 is an apocalyptic number.

80281131 is a deficient number, since it is larger than the sum of its proper divisors (42177237).

80281131 is a wasteful number, since it uses less digits than its factorization.

80281131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3922.

The product of its (nonzero) digits is 384, while the sum is 24.

The square root of 80281131 is about 8959.9738280868. The cubic root of 80281131 is about 431.3910799078.

Adding to 80281131 its reverse (13118208), we get a palindrome (93399339).

The spelling of 80281131 in words is "eighty million, two hundred eighty-one thousand, one hundred thirty-one".

Divisors: 1 3 7 21 1901 2011 5703 6033 13307 14077 39921 42231 3822911 11468733 26760377 80281131