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131240250860 = 2256562012543
BaseRepresentation
bin111101000111010000…
…1110100110111101100
3110112202100200111221212
41322032201310313230
54122240001011420
6140142502013552
712324153504035
oct1721641646754
9415670614855
10131240250860
1150727777a44
12215281172b8
13c4b6b1ca94
1464d00b5a8c
153631ba03c5
hex1e8e874dec

131240250860 has 12 divisors (see below), whose sum is σ = 275604526848. Its totient is φ = 52496100336.

The previous prime is 131240250833. The next prime is 131240250863. The reversal of 131240250860 is 68052042131.

It is not an unprimeable number, because it can be changed into a prime (131240250863) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3281006252 + ... + 3281006291.

It is an arithmetic number, because the mean of its divisors is an integer number (22967043904).

Almost surely, 2131240250860 is an apocalyptic number.

131240250860 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

131240250860 is an abundant number, since it is smaller than the sum of its proper divisors (144364275988).

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

131240250860 is a wasteful number, since it uses less digits than its factorization.

131240250860 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6562012552 (or 6562012550 counting only the distinct ones).

The product of its (nonzero) digits is 11520, while the sum is 32.

Adding to 131240250860 its reverse (68052042131), we get a palindrome (199292292991).

The spelling of 131240250860 in words is "one hundred thirty-one billion, two hundred forty million, two hundred fifty thousand, eight hundred sixty".

Divisors: 1 2 4 5 10 20 6562012543 13124025086 26248050172 32810062715 65620125430 131240250860