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131101229 = 7171101691
BaseRepresentation
bin1111101000001…
…11001000101101
3100010200122002002
413310013020231
5232030214404
621001542045
73151225220
oct764071055
9303618062
10131101229
1168004326
1237aa4925
1321212abc
14135a95b7
15b799c1e
hex7d0722d

131101229 has 8 divisors (see below), whose sum is σ = 158643648. Its totient is φ = 105762240.

The previous prime is 131101213. The next prime is 131101237. The reversal of 131101229 is 922101131.

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 131101229 - 24 = 131101213 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 131101229.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131101259) 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, 550727 + ... + 550964.

It is an arithmetic number, because the mean of its divisors is an integer number (19830456).

Almost surely, 2131101229 is an apocalyptic number.

It is an amenable number.

131101229 is a deficient number, since it is larger than the sum of its proper divisors (27542419).

131101229 is a wasteful number, since it uses less digits than its factorization.

131101229 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1101715.

The product of its (nonzero) digits is 108, while the sum is 20.

The square root of 131101229 is about 11449.9444976821. The cubic root of 131101229 is about 508.0060927308.

The spelling of 131101229 in words is "one hundred thirty-one million, one hundred one thousand, two hundred twenty-nine".

Divisors: 1 7 17 119 1101691 7711837 18728747 131101229