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131122541 = 1179150889
BaseRepresentation
bin1111101000011…
…00010101101101
3100010201201022102
413310030111231
5232031410131
621002224445
73151344314
oct764142555
9303651272
10131122541
1168019340
1237ab5125
132121c704
14135b327b
15b7a11cb
hex7d0c56d

131122541 has 8 divisors (see below), whose sum is σ = 144854400. Its totient is φ = 117692640.

The previous prime is 131122507. The next prime is 131122559. The reversal of 131122541 is 145221131.

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 131122541 - 210 = 131121517 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131122501) 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, 74576 + ... + 76313.

It is an arithmetic number, because the mean of its divisors is an integer number (18106800).

Almost surely, 2131122541 is an apocalyptic number.

131122541 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

131122541 is a deficient number, since it is larger than the sum of its proper divisors (13731859).

131122541 is a wasteful number, since it uses less digits than its factorization.

131122541 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 150979.

The product of its digits is 240, while the sum is 20.

The square root of 131122541 is about 11450.8751193959. The cubic root of 131122541 is about 508.0336186340.

Adding to 131122541 its reverse (145221131), we get a palindrome (276343672).

The spelling of 131122541 in words is "one hundred thirty-one million, one hundred twenty-two thousand, five hundred forty-one".

Divisors: 1 11 79 869 150889 1659779 11920231 131122541