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131234101 = 1716974549
BaseRepresentation
bin1111101001001…
…11100100110101
3100010221101100021
413310213210311
5232043442401
621004445141
73152320465
oct764474465
9303841307
10131234101
1168095139
1237b497b1
132125b41b
1413601ba5
15b7c42a1
hex7d27935

131234101 has 8 divisors (see below), whose sum is σ = 139066200. Its totient is φ = 123414528.

The previous prime is 131234099. The next prime is 131234123. The reversal of 131234101 is 101432131.

It can be written as a sum of positive squares in 4 ways, for example, as 87871876 + 43362225 = 9374^2 + 6585^2 .

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 131234101 - 21 = 131234099 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131234141) 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, 26575 + ... + 31123.

It is an arithmetic number, because the mean of its divisors is an integer number (17383275).

Almost surely, 2131234101 is an apocalyptic number.

It is an amenable number.

131234101 is a deficient number, since it is larger than the sum of its proper divisors (7832099).

131234101 is a wasteful number, since it uses less digits than its factorization.

131234101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6263.

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

The square root of 131234101 is about 11455.7453271273. The cubic root of 131234101 is about 508.1776573430.

Adding to 131234101 its reverse (101432131), we get a palindrome (232666232).

The spelling of 131234101 in words is "one hundred thirty-one million, two hundred thirty-four thousand, one hundred one".

Divisors: 1 17 1697 4549 28849 77333 7719653 131234101