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131083542 = 2332427473
BaseRepresentation
bin1111101000000…
…10110100010110
3100010122201211000
413310002310112
5232024133132
621001324130
73151122522
oct764026426
9303581730
10131083542
1167aa2007
1237a96646
1321207a35
14135a2d82
15b79487c
hex7d02d16

131083542 has 16 divisors (see below), whose sum is σ = 291296880. Its totient is φ = 43694496.

The previous prime is 131083541. The next prime is 131083543. The reversal of 131083542 is 245380131.

It is a happy number.

131083542 is a `hidden beast` number, since 13 + 108 + 3 + 542 = 666.

It is an interprime number because it is at equal distance from previous prime (131083541) and next prime (131083543).

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131083541) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1213683 + ... + 1213790.

It is an arithmetic number, because the mean of its divisors is an integer number (18206055).

Almost surely, 2131083542 is an apocalyptic number.

131083542 is an abundant number, since it is smaller than the sum of its proper divisors (160213338).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

131083542 is a wasteful number, since it uses less digits than its factorization.

131083542 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2427484 (or 2427478 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 27.

The square root of 131083542 is about 11449.1721098078. The cubic root of 131083542 is about 507.9832464973.

The spelling of 131083542 in words is "one hundred thirty-one million, eighty-three thousand, five hundred forty-two".

Divisors: 1 2 3 6 9 18 27 54 2427473 4854946 7282419 14564838 21847257 43694514 65541771 131083542