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131270975 = 5211557857
BaseRepresentation
bin1111101001100…
…00100100111111
3100011000020220222
413310300210333
5232101132400
621005331555
73152533133
oct764604477
9304006828
10131270975
116810a910
1237b66bbb
1321272144
14136113c3
15b7d0185
hex7d3093f

131270975 has 24 divisors (see below), whose sum is σ = 178100208. Its totient is φ = 95187200.

The previous prime is 131270939. The next prime is 131271001. The reversal of 131270975 is 579072131.

It is a happy number.

It is not a de Polignac number, because 131270975 - 220 = 130222399 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 152747 + ... + 153603.

It is an arithmetic number, because the mean of its divisors is an integer number (7420842).

Almost surely, 2131270975 is an apocalyptic number.

131270975 is a deficient number, since it is larger than the sum of its proper divisors (46829233).

131270975 is a wasteful number, since it uses less digits than its factorization.

131270975 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1435 (or 1430 counting only the distinct ones).

The product of its (nonzero) digits is 13230, while the sum is 35.

The square root of 131270975 is about 11457.3546248687. The cubic root of 131270975 is about 508.2252486018.

The spelling of 131270975 in words is "one hundred thirty-one million, two hundred seventy thousand, nine hundred seventy-five".

Divisors: 1 5 11 25 55 275 557 857 2785 4285 6127 9427 13925 21425 30635 47135 153175 235675 477349 2386745 5250839 11933725 26254195 131270975