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131142301 = 178986677
BaseRepresentation
bin1111101000100…
…01001010011101
3100010202201102021
413310101022131
5232033023201
621002500141
73151456033
oct764211235
9303681367
10131142301
1168032174
1237b04651
13212286c4
14135ba553
15b7a6ea1
hex7d1129d

131142301 has 8 divisors (see below), whose sum is σ = 140418360. Its totient is φ = 122039808.

The previous prime is 131142293. The next prime is 131142311. The reversal of 131142301 is 103241131.

It can be written as a sum of positive squares in 4 ways, for example, as 24019801 + 107122500 = 4901^2 + 10350^2 .

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 131142301 - 23 = 131142293 is a prime.

It is a super-2 number, since 2×1311423012 = 34396606223149202, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131142311) 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, 41826 + ... + 44851.

It is an arithmetic number, because the mean of its divisors is an integer number (17552295).

Almost surely, 2131142301 is an apocalyptic number.

It is an amenable number.

131142301 is a deficient number, since it is larger than the sum of its proper divisors (9276059).

131142301 is an equidigital number, since it uses as much as digits as its factorization.

131142301 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 86783.

The product of its (nonzero) digits is 72, while the sum is 16.

The square root of 131142301 is about 11451.7379030434. The cubic root of 131142301 is about 508.0591373587.

Adding to 131142301 its reverse (103241131), we get a palindrome (234383432).

The spelling of 131142301 in words is "one hundred thirty-one million, one hundred forty-two thousand, three hundred one".

Divisors: 1 17 89 1513 86677 1473509 7714253 131142301