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131024512443 = 31137273139293
BaseRepresentation
bin111101000000110101…
…0110110010110111011
3110112012022201212111010
41322001222312112323
54121314233344233
6140105234005003
712315623660046
oct1720152662673
9415168655433
10131024512443
1150626a15530
1221487a16763
13c481215006
1464ad597c5d
15361cc87b63
hex1e81ab65bb

131024512443 has 32 divisors (see below), whose sum is σ = 195808603392. Its totient is φ = 77232355200.

The previous prime is 131024512441. The next prime is 131024512457. The reversal of 131024512443 is 344215420131.

It is not a de Polignac number, because 131024512443 - 21 = 131024512441 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 131024512443.

It is not an unprimeable number, because it can be changed into a prime (131024512441) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 3314905 + ... + 3354197.

It is an arithmetic number, because the mean of its divisors is an integer number (6119018856).

Almost surely, 2131024512443 is an apocalyptic number.

131024512443 is a deficient number, since it is larger than the sum of its proper divisors (64784090949).

131024512443 is a wasteful number, since it uses less digits than its factorization.

131024512443 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42075.

The product of its (nonzero) digits is 11520, while the sum is 30.

Adding to 131024512443 its reverse (344215420131), we get a palindrome (475239932574).

The spelling of 131024512443 in words is "one hundred thirty-one billion, twenty-four million, five hundred twelve thousand, four hundred forty-three".

Divisors: 1 3 11 33 37 111 407 1221 2731 8193 30041 39293 90123 101047 117879 303141 432223 1111517 1296669 1453841 3334551 4361523 15992251 47976753 107309183 321927549 1180401013 3541203039 3970439771 11911319313 43674837481 131024512443