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131243103254 = 2179113663757
BaseRepresentation
bin111101000111010110…
…0101101010000010110
3110112202120001102201002
41322032230231100112
54122241213301004
6140143043103302
712324216654044
oct1721654552026
9415676042632
10131243103254
1150729345a9a
1221529071b32
13c4b75ab1a3
1464d0619394
15363206561e
hex1e8eb2d416

131243103254 has 8 divisors (see below), whose sum is σ = 196875699888. Its totient is φ = 65617869960.

The previous prime is 131243103241. The next prime is 131243103289. The reversal of 131243103254 is 452301342131.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a Curzon number.

It is a congruent 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 3 ways as a sum of consecutive naturals, for example, 1796057 + ... + 1867700.

It is an arithmetic number, because the mean of its divisors is an integer number (24609462486).

Almost surely, 2131243103254 is an apocalyptic number.

131243103254 is a deficient number, since it is larger than the sum of its proper divisors (65632596634).

131243103254 is a wasteful number, since it uses less digits than its factorization.

131243103254 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3681670.

The product of its (nonzero) digits is 8640, while the sum is 29.

Adding to 131243103254 its reverse (452301342131), we get a palindrome (583544445385).

The spelling of 131243103254 in words is "one hundred thirty-one billion, two hundred forty-three million, one hundred three thousand, two hundred fifty-four".

Divisors: 1 2 17911 35822 3663757 7327514 65621551627 131243103254