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131031031552 = 285695771559
BaseRepresentation
bin111101000001000001…
…1101101111100000000
3110112012210000002000121
41322002003231330000
54121322421002202
6140110025430024
712316033251151
oct1720203557400
9415183002017
10131031031552
115062a668423
122148a03b314
13c482688385
1464b03b3928
15361d624537
hex1e820edf00

131031031552 has 72 divisors (see below), whose sum is σ = 262632333600. Its totient is φ = 65245151232.

The previous prime is 131031031543. The next prime is 131031031559. The reversal of 131031031552 is 255130130131.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131031031559) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 84047349 + ... + 84048907.

It is an arithmetic number, because the mean of its divisors is an integer number (3647671300).

Almost surely, 2131031031552 is an apocalyptic number.

It is an amenable number.

131031031552 is an abundant number, since it is smaller than the sum of its proper divisors (131601302048).

131031031552 is an equidigital number, since it uses as much as digits as its factorization.

131031031552 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2721 (or 2707 counting only the distinct ones).

The product of its (nonzero) digits is 1350, while the sum is 25.

Adding to 131031031552 its reverse (255130130131), we get a palindrome (386161161683).

The spelling of 131031031552 in words is "one hundred thirty-one billion, thirty-one million, thirty-one thousand, five hundred fifty-two".

Divisors: 1 2 4 8 16 32 64 128 256 569 577 1138 1154 1559 2276 2308 3118 4552 4616 6236 9104 9232 12472 18208 18464 24944 36416 36928 49888 72832 73856 99776 145664 147712 199552 328313 399104 656626 887071 899543 1313252 1774142 1799086 2626504 3548284 3598172 5253008 7096568 7196344 10506016 14193136 14392688 21012032 28386272 28785376 42024064 56772544 57570752 84048128 113545088 115141504 227090176 230283008 511839967 1023679934 2047359868 4094719736 8189439472 16378878944 32757757888 65515515776 131031031552