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131310131442 = 2373126431701
BaseRepresentation
bin111101001001010110…
…0011001100011110010
3110112221020011211002120
41322102230121203302
54122410343201232
6140153435455110
712325662462360
oct1722254314362
9415836154076
10131310131442
1150763167296
12215475b7496
13c4c8449139
1464d94a6630
153637da592c
hex1e92b198f2

131310131442 has 16 divisors (see below), whose sum is σ = 300137443392. Its totient is φ = 37517180400.

The previous prime is 131310131419. The next prime is 131310131467. The reversal of 131310131442 is 244131013131.

It is a happy number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1563215809 + ... + 1563215892.

It is an arithmetic number, because the mean of its divisors is an integer number (18758590212).

Almost surely, 2131310131442 is an apocalyptic number.

131310131442 is an abundant number, since it is smaller than the sum of its proper divisors (168827311950).

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

131310131442 is a wasteful number, since it uses less digits than its factorization.

131310131442 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3126431713.

The product of its (nonzero) digits is 864, while the sum is 24.

Adding to 131310131442 its reverse (244131013131), we get a palindrome (375441144573).

The spelling of 131310131442 in words is "one hundred thirty-one billion, three hundred ten million, one hundred thirty-one thousand, four hundred forty-two".

Divisors: 1 2 3 6 7 14 21 42 3126431701 6252863402 9379295103 18758590206 21885021907 43770043814 65655065721 131310131442