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BaseRepresentation
bin100000000100110111
320200020001
4200010313
513201013
62452131
71055020
oct400467
9220201
10131383
118a78a
1264047
1347a55
1435c47
1528ddd
hex20137

131383 has 6 divisors (see below), whose sum is σ = 151256. Its totient is φ = 111792.

The previous prime is 131381. The next prime is 131413. The reversal of 131383 is 383131.

It is not a de Polignac number, because 131383 - 21 = 131381 is a prime.

It is a super-2 number, since 2×1313832 = 34522985378, which contains 22 as substring.

It is a plaindrome in base 15.

It is a self number, because there is not a number n which added to its sum of digits gives 131383.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131381) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 891 + ... + 1027.

2131383 is an apocalyptic number.

131383 is a deficient number, since it is larger than the sum of its proper divisors (19873).

131383 is an frugal number, since it uses more digits than its factorization.

131383 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 281 (or 144 counting only the distinct ones).

The product of its digits is 216, while the sum is 19.

The square root of 131383 is about 362.4679296158. The cubic root of 131383 is about 50.8369778509.

The spelling of 131383 in words is "one hundred thirty-one thousand, three hundred eighty-three".

Divisors: 1 7 137 959 18769 131383