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131940375 = 353750263
BaseRepresentation
bin1111101110101…
…00000000010111
3100012021021011120
413313110000113
5232234043000
621031535023
73161321550
oct767240027
9305237146
10131940375
1168527836
123822a473
1321447a38
1413747327
15b8b36a0
hex7dd4017

131940375 has 32 divisors (see below), whose sum is σ = 250917888. Its totient is φ = 60314400.

The previous prime is 131940331. The next prime is 131940437. The reversal of 131940375 is 573049131.

It is not a de Polignac number, because 131940375 - 28 = 131940119 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 22507 + ... + 27756.

It is an arithmetic number, because the mean of its divisors is an integer number (7841184).

Almost surely, 2131940375 is an apocalyptic number.

131940375 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

131940375 is a deficient number, since it is larger than the sum of its proper divisors (118977513).

131940375 is an equidigital number, since it uses as much as digits as its factorization.

131940375 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 50288 (or 50278 counting only the distinct ones).

The product of its (nonzero) digits is 11340, while the sum is 33.

The square root of 131940375 is about 11486.5301549249. The cubic root of 131940375 is about 509.0876614714.

It can be divided in two parts, 131 and 940375, that added together give a triangular number (940506 = T1371).

The spelling of 131940375 in words is "one hundred thirty-one million, nine hundred forty thousand, three hundred seventy-five".

Divisors: 1 3 5 7 15 21 25 35 75 105 125 175 375 525 875 2625 50263 150789 251315 351841 753945 1055523 1256575 1759205 3769725 5277615 6282875 8796025 18848625 26388075 43980125 131940375