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131120201 = 1743181991
BaseRepresentation
bin1111101000010…
…11110001001001
3100010201121002202
413310023301021
5232031321301
621002205545
73151334432
oct764136111
9303647082
10131120201
1168017603
1237ab38b5
132121b624
14135b2489
15b7a066b
hex7d0bc49

131120201 has 16 divisors (see below), whose sum is σ = 142990848. Its totient is φ = 119750400.

The previous prime is 131120189. The next prime is 131120203. The reversal of 131120201 is 102021131.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2k-131120201 is a prime.

It is a super-2 number, since 2×1311202012 = 34385014220560802, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (131120203) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 131816 + ... + 132806.

It is an arithmetic number, because the mean of its divisors is an integer number (8936928).

Almost surely, 2131120201 is an apocalyptic number.

It is an amenable number.

131120201 is a deficient number, since it is larger than the sum of its proper divisors (11870647).

131120201 is a wasteful number, since it uses less digits than its factorization.

131120201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1232.

The product of its (nonzero) digits is 12, while the sum is 11.

The square root of 131120201 is about 11450.7729433432. The cubic root of 131120201 is about 508.0305965100.

Adding to 131120201 its reverse (102021131), we get a palindrome (233141332).

It can be divided in two parts, 1311 and 20201, that added together give a palindrome (21512).

The spelling of 131120201 in words is "one hundred thirty-one million, one hundred twenty thousand, two hundred one".

Divisors: 1 17 43 181 731 991 3077 7783 16847 42613 132311 179371 724421 3049307 7712953 131120201