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131708370 = 2354390279
BaseRepresentation
bin1111101100110…
…11010111010010
3100011211110220210
413312123113102
5232204131440
621022544550
73156334263
oct766332722
9304743823
10131708370
11683894a2
1238138156
1321396261
14136c696a
15b869a80
hex7d9b5d2

131708370 has 16 divisors (see below), whose sum is σ = 316100160. Its totient is φ = 35122224.

The previous prime is 131708363. The next prime is 131708371. The reversal of 131708370 is 73807131.

It is a Harshad number since it is a multiple of its sum of digits (30), and also a Moran number because the ratio is a prime number: 4390279 = 131708370 / (1 + 3 + 1 + 7 + 0 + 8 + 3 + 7 + 0).

It is not an unprimeable number, because it can be changed into a prime (131708371) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2195110 + ... + 2195169.

It is an arithmetic number, because the mean of its divisors is an integer number (19756260).

Almost surely, 2131708370 is an apocalyptic number.

131708370 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

131708370 is an abundant number, since it is smaller than the sum of its proper divisors (184391790).

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

131708370 is a wasteful number, since it uses less digits than its factorization.

131708370 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4390289.

The product of its (nonzero) digits is 3528, while the sum is 30.

The square root of 131708370 is about 11476.4267086929. The cubic root of 131708370 is about 508.7890918091.

The spelling of 131708370 in words is "one hundred thirty-one million, seven hundred eight thousand, three hundred seventy".

Divisors: 1 2 3 5 6 10 15 30 4390279 8780558 13170837 21951395 26341674 43902790 65854185 131708370