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131039287445 = 51114915990151
BaseRepresentation
bin111101000001010001…
…1001101100010010101
3110112020100112111222102
41322002203031202111
54121332024144240
6140110522411445
712316163364623
oct1720243154225
9415210474872
10131039287445
1150634297180
1221490960b85
13c4842b9111
1464b1522513
15361e205815
hex1e828cd895

131039287445 has 16 divisors (see below), whose sum is σ = 172693641600. Its totient is φ = 94661688000.

The previous prime is 131039287439. The next prime is 131039287453. The reversal of 131039287445 is 544782930131.

It is not a de Polignac number, because 131039287445 - 210 = 131039286421 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 131039287445.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7986881 + ... + 8003270.

It is an arithmetic number, because the mean of its divisors is an integer number (10793352600).

Almost surely, 2131039287445 is an apocalyptic number.

It is an amenable number.

131039287445 is a deficient number, since it is larger than the sum of its proper divisors (41654354155).

131039287445 is a wasteful number, since it uses less digits than its factorization.

131039287445 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15990316.

The product of its (nonzero) digits is 725760, while the sum is 47.

The spelling of 131039287445 in words is "one hundred thirty-one billion, thirty-nine million, two hundred eighty-seven thousand, four hundred forty-five".

Divisors: 1 5 11 55 149 745 1639 8195 15990151 79950755 175891661 879458305 2382532499 11912662495 26207857489 131039287445