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131211545112132 = 22323475404148957
BaseRepresentation
bin11101110101011000010001…
…100010010110111001000100
3122012120200221011212212020220
4131311120101202112321010
5114144232221022042012
61143021430210224340
736431502256223532
oct3565302142267104
9565520834785226
10131211545112132
113889855a5a0a01
1212871814b850b0
13582a2709b5c94
14245895bb33152
1510281a7aed08c
hex775611896e44

131211545112132 has 24 divisors (see below), whose sum is σ = 319471588099776. Its totient is φ = 41835565108128.

The previous prime is 131211545112083. The next prime is 131211545112161. The reversal of 131211545112132 is 231211545112131.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 131211545112093 and 131211545112102.

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, 237702074203 + ... + 237702074754.

It is an arithmetic number, because the mean of its divisors is an integer number (13311316170824).

Almost surely, 2131211545112132 is an apocalyptic number.

131211545112132 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

131211545112132 is an abundant number, since it is smaller than the sum of its proper divisors (188260042987644).

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

131211545112132 is a wasteful number, since it uses less digits than its factorization.

131211545112132 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 475404148987 (or 475404148985 counting only the distinct ones).

The product of its digits is 7200, while the sum is 33.

Subtracting 131211545112132 from its reverse (231211545112131), we obtain a palindrome (99999999999999).

The spelling of 131211545112132 in words is "one hundred thirty-one trillion, two hundred eleven billion, five hundred forty-five million, one hundred twelve thousand, one hundred thirty-two".

Divisors: 1 2 3 4 6 12 23 46 69 92 138 276 475404148957 950808297914 1426212446871 1901616595828 2852424893742 5704849787484 10934295426011 21868590852022 32802886278033 43737181704044 65605772556066 131211545112132