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131009884488 = 23337312171453
BaseRepresentation
bin111101000000011001…
…1000011000101001000
3110112011022012200201000
41322000303003011020
54121302012300423
6140103552255000
712315355434000
oct1720063030510
9415138180630
10131009884488
115061973430a
1221482b41460
13c47b192b12
1464ab66b000
15361b848843
hex1e80cc3148

131009884488 has 256 divisors, whose sum is σ = 425033280000. Its totient is φ = 37374898176.

The previous prime is 131009884487. The next prime is 131009884541. The reversal of 131009884488 is 884488900131.

131009884488 is a `hidden beast` number, since 1 + 3 + 100 + 98 + 8 + 448 + 8 = 666.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is not an unprimeable number, because it can be changed into a prime (131009884487) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 90164370 + ... + 90165822.

It is an arithmetic number, because the mean of its divisors is an integer number (1660286250).

Almost surely, 2131009884488 is an apocalyptic number.

131009884488 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 131009884488, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (212516640000).

131009884488 is an abundant number, since it is smaller than the sum of its proper divisors (294023395512).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

131009884488 is a wasteful number, since it uses less digits than its factorization.

131009884488 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2706 (or 2682 counting only the distinct ones).

The product of its (nonzero) digits is 1769472, while the sum is 54.

The spelling of 131009884488 in words is "one hundred thirty-one billion, nine million, eight hundred eighty-four thousand, four hundred eighty-eight".