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106878031 = 1317483611
BaseRepresentation
bin1100101111011…
…01010001001111
321110002222002121
412113231101033
5204330044111
614334433411
72435306521
oct627552117
9243088077
10106878031
115536a057
122b962867
13191b1350
14102a1a11
1595b2871
hex65ed44f

106878031 has 8 divisors (see below), whose sum is σ = 121870224. Its totient is φ = 92853120.

The previous prime is 106878029. The next prime is 106878043. The reversal of 106878031 is 130878601.

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 106878031 - 21 = 106878029 is a prime.

It is a super-2 number, since 2×1068780312 = 22845827020873922, 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 (106878001) 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, 241585 + ... + 242026.

It is an arithmetic number, because the mean of its divisors is an integer number (15233778).

Almost surely, 2106878031 is an apocalyptic number.

106878031 is a deficient number, since it is larger than the sum of its proper divisors (14992193).

106878031 is a wasteful number, since it uses less digits than its factorization.

106878031 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 483641.

The product of its (nonzero) digits is 8064, while the sum is 34.

The square root of 106878031 is about 10338.1831575959. The cubic root of 106878031 is about 474.5654840794.

The spelling of 106878031 in words is "one hundred six million, eight hundred seventy-eight thousand, thirty-one".

Divisors: 1 13 17 221 483611 6286943 8221387 106878031