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131031130232 = 2316378891279
BaseRepresentation
bin111101000001000010…
…0000110000001111000
3110112012210012002101102
41322002010012001320
54121322432131412
6140110031510532
712316034141642
oct1720204060170
9415183162342
10131031130232
115062a725582
122148a088448
13c4826c1272
1464b03db892
15361d6438c2
hex1e82106078

131031130232 has 8 divisors (see below), whose sum is σ = 245683369200. Its totient is φ = 65515565112.

The previous prime is 131031130229. The next prime is 131031130253. The reversal of 131031130232 is 232031130131.

It is a tau number, because it is divible by the number of its divisors (8).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8189445632 + ... + 8189445647.

It is an arithmetic number, because the mean of its divisors is an integer number (30710421150).

Almost surely, 2131031130232 is an apocalyptic number.

It is an amenable number.

131031130232 is a deficient number, since it is larger than the sum of its proper divisors (114652238968).

131031130232 is a wasteful number, since it uses less digits than its factorization.

131031130232 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16378891285 (or 16378891281 counting only the distinct ones).

The product of its (nonzero) digits is 324, while the sum is 20.

Adding to 131031130232 its reverse (232031130131), we get a palindrome (363062260363).

The spelling of 131031130232 in words is "one hundred thirty-one billion, thirty-one million, one hundred thirty thousand, two hundred thirty-two".

Divisors: 1 2 4 8 16378891279 32757782558 65515565116 131031130232