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BaseRepresentation
bin100000000110111111
320200102002
4200012333
513202034
62452515
71055303
oct400677
9220362
10131519
118a8a3
126413b
1347b2b
1435d03
1528e7e
hex201bf

131519 has 2 divisors, whose sum is σ = 131520. Its totient is φ = 131518.

The previous prime is 131507. The next prime is 131543. The reversal of 131519 is 915131.

131519 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 131519 - 212 = 127423 is a prime.

It is a super-2 number, since 2×1315192 = 34594494722, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 131519.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (133519) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 65759 + 65760.

It is an arithmetic number, because the mean of its divisors is an integer number (65760).

2131519 is an apocalyptic number.

131519 is a deficient number, since it is larger than the sum of its proper divisors (1).

131519 is an equidigital number, since it uses as much as digits as its factorization.

131519 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 135, while the sum is 20.

The square root of 131519 is about 362.6554838962. The cubic root of 131519 is about 50.8545129576.

The spelling of 131519 in words is "one hundred thirty-one thousand, five hundred nineteen".