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131308007172 = 22310942333931
BaseRepresentation
bin111101001001010010…
…0010010111100000100
3110112221002011220010220
41322102210102330010
54122404322212142
6140153322144340
712325635434226
oct1722244227404
9415832156126
10131308007172
1150761a462a1
12215469520b0
13c4c7b84284
1464d90b2416
153637ad62ec
hex1e92912f04

131308007172 has 12 divisors (see below), whose sum is σ = 306385350096. Its totient is φ = 43769335720.

The previous prime is 131308007111. The next prime is 131308007209. The reversal of 131308007172 is 271700803131.

131308007172 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (12).

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5471166954 + ... + 5471166977.

It is an arithmetic number, because the mean of its divisors is an integer number (25532112508).

Almost surely, 2131308007172 is an apocalyptic number.

131308007172 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

131308007172 is an abundant number, since it is smaller than the sum of its proper divisors (175077342924).

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

131308007172 is a wasteful number, since it uses less digits than its factorization.

131308007172 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10942333938 (or 10942333936 counting only the distinct ones).

The product of its (nonzero) digits is 7056, while the sum is 33.

The spelling of 131308007172 in words is "one hundred thirty-one billion, three hundred eight million, seven thousand, one hundred seventy-two".

Divisors: 1 2 3 4 6 12 10942333931 21884667862 32827001793 43769335724 65654003586 131308007172