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131919188552 = 231284132
BaseRepresentation
bin111101011011011111…
…1110001001001001000
3110121111200020010101022
41322312333301021020
54130132303013202
6140334114012012
712350036413154
oct1726677611110
9417450203338
10131919188552
1150a45a40978
1221697577008
13c594696368
14655632a064
1536715b1ea2
hex1eb6ff1248

131919188552 has 12 divisors (see below), whose sum is σ = 247350404745. Its totient is φ = 65959080624.

The previous prime is 131919188537. The next prime is 131919188561. The reversal of 131919188552 is 255881919131.

It is a powerful number, because all its prime factors have an exponent greater than 1 and also an Achilles number because it is not a perfect power.

It can be written as a sum of positive squares in 2 ways, for example, as 127739048836 + 4180139716 = 357406^2 + 64654^2 .

It is an ABA number since it can be written as A⋅BA, here for A=2, B=256826.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 131919188494 and 131919188503.

It is an unprimeable number.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 963098 + ... + 1091510.

Almost surely, 2131919188552 is an apocalyptic number.

It is an amenable number.

131919188552 is a deficient number, since it is larger than the sum of its proper divisors (115431216193).

131919188552 is an frugal number, since it uses more digits than its factorization.

131919188552 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 256832 (or 128415 counting only the distinct ones).

The product of its digits is 777600, while the sum is 53.

The spelling of 131919188552 in words is "one hundred thirty-one billion, nine hundred nineteen million, one hundred eighty-eight thousand, five hundred fifty-two".

Divisors: 1 2 4 8 128413 256826 513652 1027304 16489898569 32979797138 65959594276 131919188552