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131935319 = 257513367
BaseRepresentation
bin1111101110100…
…10110001010111
3100012021000020022
413313102301113
5232233412234
621031455355
73161301035
oct767226127
9305230208
10131935319
1168523a5a
123822755b
1321445649
1413745555
15b8b1e2e
hex7dd2c57

131935319 has 4 divisors (see below), whose sum is σ = 132448944. Its totient is φ = 131421696.

The previous prime is 131935301. The next prime is 131935327. The reversal of 131935319 is 913539131.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 913539131 = 5417168643.

It is a cyclic number.

It is not a de Polignac number, because 131935319 - 212 = 131931223 is a prime.

It is a super-2 number, since 2×1319353192 = 34813856799263522, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131935339) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 256427 + ... + 256940.

It is an arithmetic number, because the mean of its divisors is an integer number (33112236).

Almost surely, 2131935319 is an apocalyptic number.

131935319 is a deficient number, since it is larger than the sum of its proper divisors (513625).

131935319 is an equidigital number, since it uses as much as digits as its factorization.

131935319 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 513624.

The product of its digits is 10935, while the sum is 35.

The square root of 131935319 is about 11486.3100689473. The cubic root of 131935319 is about 509.0811585843.

The spelling of 131935319 in words is "one hundred thirty-one million, nine hundred thirty-five thousand, three hundred nineteen".

Divisors: 1 257 513367 131935319