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131901 = 3711571
BaseRepresentation
bin100000001100111101
320200221020
4200030331
513210101
62454353
71056360
oct401475
9220836
10131901
1190110
12643b9
1348063
14360d7
1529136
hex2033d

131901 has 16 divisors (see below), whose sum is σ = 219648. Its totient is φ = 68400.

The previous prime is 131899. The next prime is 131909. The reversal of 131901 is 109131.

It is not a de Polignac number, because 131901 - 21 = 131899 is a prime.

It is an Ulam number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131909) 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, 55 + ... + 516.

It is an arithmetic number, because the mean of its divisors is an integer number (13728).

2131901 is an apocalyptic number.

131901 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

131901 is a deficient number, since it is larger than the sum of its proper divisors (87747).

131901 is a wasteful number, since it uses less digits than its factorization.

131901 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 592.

The product of its (nonzero) digits is 27, while the sum is 15.

The square root of 131901 is about 363.1817726704. The cubic root of 131901 is about 50.9037014046.

The spelling of 131901 in words is "one hundred thirty-one thousand, nine hundred one".

Divisors: 1 3 7 11 21 33 77 231 571 1713 3997 6281 11991 18843 43967 131901