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131129712458 = 22310312764933
BaseRepresentation
bin111101000011111110…
…0001001111101001010
3110112110122200120202222
41322013330021331022
54122023201244313
6140123512454042
712321342110453
oct1720774117512
9415418616688
10131129712458
1150680338898
12214b70aa322
13c499c59644
1464bd54012a
153627118208
hex1e87f09f4a

131129712458 has 16 divisors (see below), whose sum is σ = 205445655936. Its totient is φ = 62653359120.

The previous prime is 131129712379. The next prime is 131129712487. The reversal of 131129712458 is 854217921131.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1335041 + ... + 1429892.

It is an arithmetic number, because the mean of its divisors is an integer number (12840353496).

Almost surely, 2131129712458 is an apocalyptic number.

131129712458 is a deficient number, since it is larger than the sum of its proper divisors (74315943478).

131129712458 is a wasteful number, since it uses less digits than its factorization.

131129712458 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2765989.

The product of its digits is 120960, while the sum is 44.

The spelling of 131129712458 in words is "one hundred thirty-one billion, one hundred twenty-nine million, seven hundred twelve thousand, four hundred fifty-eight".

Divisors: 1 2 23 46 1031 2062 23713 47426 2764933 5529866 63593459 127186918 2850645923 5701291846 65564856229 131129712458