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131011113031420 = 22534718877681993
BaseRepresentation
bin11101110010011101100110…
…110110101001011011111100
3122011212112120201120012110011
4131302131212312221123330
5114132441224414001140
61142345401403153004
736411145340522146
oct3562354666513374
9564775521505404
10131011113031420
1138820556943106
121283a9b8815764
1358143ab00245b
14244cd864d9c96
151022d76779cea
hex772766da96fc

131011113031420 has 24 divisors (see below), whose sum is σ = 275916200024304. Its totient is φ = 52253423753856.

The previous prime is 131011113031391. The next prime is 131011113031423. The reversal of 131011113031420 is 24130311110131.

It is a junction number, because it is equal to n+sod(n) for n = 131011113031391 and 131011113031400.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131011113031423) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9438834057 + ... + 9438847936.

It is an arithmetic number, because the mean of its divisors is an integer number (11496508334346).

Almost surely, 2131011113031420 is an apocalyptic number.

131011113031420 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

131011113031420 is an abundant number, since it is smaller than the sum of its proper divisors (144905086992884).

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

131011113031420 is a wasteful number, since it uses less digits than its factorization.

131011113031420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18877682349 (or 18877682347 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 22.

Adding to 131011113031420 its reverse (24130311110131), we get a palindrome (155141424141551).

The spelling of 131011113031420 in words is "one hundred thirty-one trillion, eleven billion, one hundred thirteen million, thirty-one thousand, four hundred twenty".

Divisors: 1 2 4 5 10 20 347 694 1388 1735 3470 6940 18877681993 37755363986 75510727972 94388409965 188776819930 377553639860 6550555651571 13101111303142 26202222606284 32752778257855 65505556515710 131011113031420