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131041854 = 2332639227
BaseRepresentation
bin1111100111110…
…00101000111110
3100010120121122000
413303320220332
5232021314404
621000403130
73150560136
oct763705076
9303517560
10131041854
1167a73759
1237a764a6
13211c1a78
1413591ac6
15b787339
hex7cf8a3e

131041854 has 32 divisors (see below), whose sum is σ = 292343040. Its totient is φ = 43509816.

The previous prime is 131041843. The next prime is 131041873. The reversal of 131041854 is 458140131.

It is a happy number.

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

It is a congruent number.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 9589 + ... + 18815.

It is an arithmetic number, because the mean of its divisors is an integer number (9135720).

Almost surely, 2131041854 is an apocalyptic number.

131041854 is an abundant number, since it is smaller than the sum of its proper divisors (161301186).

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

131041854 is a wasteful number, since it uses less digits than its factorization.

131041854 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9501 (or 9495 counting only the distinct ones).

The product of its (nonzero) digits is 1920, while the sum is 27.

The square root of 131041854 is about 11447.3513967206. The cubic root of 131041854 is about 507.9293901281.

Adding to 131041854 its reverse (458140131), we get a palindrome (589181985).

The spelling of 131041854 in words is "one hundred thirty-one million, forty-one thousand, eight hundred fifty-four".

Divisors: 1 2 3 6 9 18 27 54 263 526 789 1578 2367 4734 7101 9227 14202 18454 27681 55362 83043 166086 249129 498258 2426701 4853402 7280103 14560206 21840309 43680618 65520927 131041854