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131254115740 = 22511596609617
BaseRepresentation
bin111101000111101011…
…0101101110110011100
3110112210022202220222221
41322033112231312130
54122302023200430
6140144115115124
712324412401316
oct1721726556634
9415708686887
10131254115740
1150734587920
12215308a2aa4
13c4b9965857
1464d1c847b6
153632edd57a
hex1e8f5add9c

131254115740 has 24 divisors (see below), whose sum is σ = 300691247472. Its totient is φ = 47728769280.

The previous prime is 131254115731. The next prime is 131254115747. The reversal of 131254115740 is 47511452131.

It is a junction number, because it is equal to n+sod(n) for n = 131254115696 and 131254115705.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131254115747) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 298304589 + ... + 298305028.

It is an arithmetic number, because the mean of its divisors is an integer number (12528801978).

Almost surely, 2131254115740 is an apocalyptic number.

131254115740 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

131254115740 is an abundant number, since it is smaller than the sum of its proper divisors (169437131732).

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

131254115740 is a wasteful number, since it uses less digits than its factorization.

131254115740 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 596609637 (or 596609635 counting only the distinct ones).

The product of its (nonzero) digits is 16800, while the sum is 34.

Adding to 131254115740 its reverse (47511452131), we get a palindrome (178765567871).

The spelling of 131254115740 in words is "one hundred thirty-one billion, two hundred fifty-four million, one hundred fifteen thousand, seven hundred forty".

Divisors: 1 2 4 5 10 11 20 22 44 55 110 220 596609617 1193219234 2386438468 2983048085 5966096170 6562705787 11932192340 13125411574 26250823148 32813528935 65627057870 131254115740