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131233331012 = 22721587217117
BaseRepresentation
bin111101000111000011…
…1011011011101000100
3110112201212122221201012
41322032013123131010
54122231213043022
6140142053421352
712324040623410
oct1721607333504
9415655587635
10131233331012
1150723880a63
122152593a858
13c4b55691b4
1464cd1d3d40
153631284de2
hex1e8e1db744

131233331012 has 24 divisors (see below), whose sum is σ = 262480029504. Its totient is φ = 56239991712.

The previous prime is 131233330997. The next prime is 131233331057. The reversal of 131233331012 is 210133332131.

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, 495878 + ... + 712994.

It is an arithmetic number, because the mean of its divisors is an integer number (10936667896).

Almost surely, 2131233331012 is an apocalyptic number.

It is an amenable number.

131233331012 is an abundant number, since it is smaller than the sum of its proper divisors (131246698492).

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

131233331012 is a wasteful number, since it uses less digits than its factorization.

131233331012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 238715 (or 238713 counting only the distinct ones).

The product of its (nonzero) digits is 972, while the sum is 23.

Adding to 131233331012 its reverse (210133332131), we get a palindrome (341366663143).

The spelling of 131233331012 in words is "one hundred thirty-one billion, two hundred thirty-three million, three hundred thirty-one thousand, twelve".

Divisors: 1 2 4 7 14 28 21587 43174 86348 151109 217117 302218 434234 604436 868468 1519819 3039638 6079276 4686904679 9373809358 18747618716 32808332753 65616665506 131233331012