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131101120031202 = 232299724138328051
BaseRepresentation
bin11101110011110001011011…
…101100000110100111100010
3122012012010220110121112110200
4131303301123230012213202
5114140430043211444302
61142455004553410030
736420512653431216
oct3563613354064742
9565163813545420
10131101120031202
1138855744505242
1212854337a09916
13581ca234057c9
1424534842da946
15102539353a81c
hex773c5bb069e2

131101120031202 has 192 divisors, whose sum is σ = 298897551912960. Its totient is φ = 41475151872000.

The previous prime is 131101120031149. The next prime is 131101120031239. The reversal of 131101120031202 is 202130021101131.

131101120031202 is a `hidden beast` number, since 1 + 311 + 0 + 1 + 120 + 0 + 31 + 202 = 666.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 4673656077 + ... + 4673684127.

It is an arithmetic number, because the mean of its divisors is an integer number (1556758082880).

Almost surely, 2131101120031202 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 131101120031202, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (149448775956480).

131101120031202 is an abundant number, since it is smaller than the sum of its proper divisors (167796431881758).

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

131101120031202 is a wasteful number, since it uses less digits than its factorization.

131101120031202 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28809 (or 28806 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 18.

Adding to 131101120031202 its reverse (202130021101131), we get a palindrome (333231141132333).

The spelling of 131101120031202 in words is "one hundred thirty-one trillion, one hundred one billion, one hundred twenty million, thirty-one thousand, two hundred two".