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83980131 = 3113247729
BaseRepresentation
bin1010000000101…
…10111101100011
312212000122002020
411000112331203
5132444331011
612155552523
72036551014
oct500267543
9185018066
1083980131
114344a574
122415b743
1314524bb1
14b22100b
15758d006
hex5016f63

83980131 has 8 divisors (see below), whose sum is σ = 112964880. Its totient is φ = 55491072.

The previous prime is 83980129. The next prime is 83980139. The reversal of 83980131 is 13108938.

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

It is not a de Polignac number, because 83980131 - 21 = 83980129 is a prime.

It is a super-2 number, since 2×839801312 = 14105324805554322, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 83980092 and 83980101.

It is not an unprimeable number, because it can be changed into a prime (83980139) 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, 123526 + ... + 124203.

It is an arithmetic number, because the mean of its divisors is an integer number (14120610).

Almost surely, 283980131 is an apocalyptic number.

83980131 is a deficient number, since it is larger than the sum of its proper divisors (28984749).

83980131 is a wasteful number, since it uses less digits than its factorization.

83980131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 247845.

The product of its (nonzero) digits is 5184, while the sum is 33.

The square root of 83980131 is about 9164.0673829910. The cubic root of 83980131 is about 437.9173808429.

The spelling of 83980131 in words is "eighty-three million, nine hundred eighty thousand, one hundred thirty-one".

Divisors: 1 3 113 339 247729 743187 27993377 83980131