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131274603492 = 22310939550291
BaseRepresentation
bin111101001000010010…
…0110111101111100100
3110112211202022210220120
41322100210313233210
54122322244302432
6140150130201540
712325051501344
oct1722044675744
9415752283816
10131274603492
115074510064a
12215377232b0
13c4c0c89c96
1464d4898d24
153634bd8c2c
hex1e90937be4

131274603492 has 12 divisors (see below), whose sum is σ = 306307408176. Its totient is φ = 43758201160.

The previous prime is 131274603491. The next prime is 131274603503. The reversal of 131274603492 is 294306472131.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (12).

It is not an unprimeable number, because it can be changed into a prime (131274603491) 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, 5469775134 + ... + 5469775157.

It is an arithmetic number, because the mean of its divisors is an integer number (25525617348).

Almost surely, 2131274603492 is an apocalyptic number.

131274603492 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

131274603492 is an abundant number, since it is smaller than the sum of its proper divisors (175032804684).

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

131274603492 is a wasteful number, since it uses less digits than its factorization.

131274603492 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10939550298 (or 10939550296 counting only the distinct ones).

The product of its (nonzero) digits is 217728, while the sum is 42.

The spelling of 131274603492 in words is "one hundred thirty-one billion, two hundred seventy-four million, six hundred three thousand, four hundred ninety-two".

Divisors: 1 2 3 4 6 12 10939550291 21879100582 32818650873 43758201164 65637301746 131274603492