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131053432540 = 22540116340827
BaseRepresentation
bin111101000001101100…
…1001010111011011100
3110112021100011011101211
41322003121022323130
54121344134320130
6140112145514204
712316424540152
oct1720331127334
9415240134354
10131053432540
1150641278638
1221495642964
13c4871cc5b4
1464b33653d2
15362059ba2a
hex1e8364aedc

131053432540 has 24 divisors (see below), whose sum is σ = 275898539952. Its totient is φ = 52290643200.

The previous prime is 131053432483. The next prime is 131053432579. The reversal of 131053432540 is 45234350131.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8162394 + ... + 8178433.

It is an arithmetic number, because the mean of its divisors is an integer number (11495772498).

Almost surely, 2131053432540 is an apocalyptic number.

131053432540 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

131053432540 is an abundant number, since it is smaller than the sum of its proper divisors (144845107412).

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

131053432540 is a wasteful number, since it uses less digits than its factorization.

131053432540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16341237 (or 16341235 counting only the distinct ones).

The product of its (nonzero) digits is 21600, while the sum is 31.

Adding to 131053432540 its reverse (45234350131), we get a palindrome (176287782671).

The spelling of 131053432540 in words is "one hundred thirty-one billion, fifty-three million, four hundred thirty-two thousand, five hundred forty".

Divisors: 1 2 4 5 10 20 401 802 1604 2005 4010 8020 16340827 32681654 65363308 81704135 163408270 326816540 6552671627 13105343254 26210686508 32763358135 65526716270 131053432540