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131201075 = 5229376773
BaseRepresentation
bin1111101000111…
…11100000110011
3100010212201001002
413310133200303
5232041413300
621004032215
73152122265
oct764374063
9303781032
10131201075
1168072345
1237b3266b
1321249395
14135d3b35
15b7b95d5
hex7d1f833

131201075 has 48 divisors (see below), whose sum is σ = 177830880. Its totient is φ = 95800320.

The previous prime is 131201029. The next prime is 131201101. The reversal of 131201075 is 570102131.

It is not a de Polignac number, because 131201075 - 216 = 131135539 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1797239 + ... + 1797311.

It is an arithmetic number, because the mean of its divisors is an integer number (3704810).

Almost surely, 2131201075 is an apocalyptic number.

131201075 is a deficient number, since it is larger than the sum of its proper divisors (46629805).

131201075 is a wasteful number, since it uses less digits than its factorization.

131201075 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 216 (or 211 counting only the distinct ones).

The product of its (nonzero) digits is 210, while the sum is 20.

The square root of 131201075 is about 11454.3037763105. The cubic root of 131201075 is about 508.1350249194.

The spelling of 131201075 in words is "one hundred thirty-one million, two hundred one thousand, seventy-five".

Divisors: 1 5 25 29 37 67 73 145 185 335 365 725 925 1073 1675 1825 1943 2117 2479 2701 4891 5365 9715 10585 12395 13505 24455 26825 48575 52925 61975 67525 71891 78329 122275 141839 180967 359455 391645 709195 904835 1797275 1958225 3545975 4524175 5248043 26240215 131201075