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131681076 = 22337296579
BaseRepresentation
bin1111101100101…
…00101100110100
3100011210002110220
413312110230310
5232202243301
621022214340
73156161562
oct766245464
9304702426
10131681076
116836aa3a
12381243b0
13213869c7
14136baa32
15b861936
hex7d94b34

131681076 has 24 divisors (see below), whose sum is σ = 315561120. Its totient is φ = 42707232.

The previous prime is 131681057. The next prime is 131681101. The reversal of 131681076 is 670186131.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 147846 + ... + 148733.

It is an arithmetic number, because the mean of its divisors is an integer number (13148380).

Almost surely, 2131681076 is an apocalyptic number.

It is an amenable number.

131681076 is an abundant number, since it is smaller than the sum of its proper divisors (183880044).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

131681076 is a wasteful number, since it uses less digits than its factorization.

131681076 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 296623 (or 296621 counting only the distinct ones).

The product of its (nonzero) digits is 6048, while the sum is 33.

The square root of 131681076 is about 11475.2375138818. The cubic root of 131681076 is about 508.7539438306.

The spelling of 131681076 in words is "one hundred thirty-one million, six hundred eighty-one thousand, seventy-six".

Divisors: 1 2 3 4 6 12 37 74 111 148 222 444 296579 593158 889737 1186316 1779474 3558948 10973423 21946846 32920269 43893692 65840538 131681076