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131376771420 = 22352395200559
BaseRepresentation
bin111101001011010101…
…0100111000101011100
3110120002212120110221220
41322112222213011130
54123024423141140
6140204220053340
712330432063126
oct1722652470534
9416085513856
10131376771420
1150797842954
1221565994250
13c5091ac48b
146504292216
15363db6abd0
hex1e96aa715c

131376771420 has 48 divisors (see below), whose sum is σ = 383848657920. Its totient is φ = 33510596416.

The previous prime is 131376771403. The next prime is 131376771437. The reversal of 131376771420 is 24177673131.

It is an interprime number because it is at equal distance from previous prime (131376771403) and next prime (131376771437).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 47598900 + ... + 47601659.

It is an arithmetic number, because the mean of its divisors is an integer number (7996847040).

Almost surely, 2131376771420 is an apocalyptic number.

131376771420 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

131376771420 is an abundant number, since it is smaller than the sum of its proper divisors (252471886500).

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

131376771420 is a wasteful number, since it uses less digits than its factorization.

131376771420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 95200594 (or 95200592 counting only the distinct ones).

The product of its (nonzero) digits is 148176, while the sum is 42.

The spelling of 131376771420 in words is "one hundred thirty-one billion, three hundred seventy-six million, seven hundred seventy-one thousand, four hundred twenty".

Divisors: 1 2 3 4 5 6 10 12 15 20 23 30 46 60 69 92 115 138 230 276 345 460 690 1380 95200559 190401118 285601677 380802236 476002795 571203354 952005590 1142406708 1428008385 1904011180 2189612857 2856016770 4379225714 5712033540 6568838571 8758451428 10948064285 13137677142 21896128570 26275354284 32844192855 43792257140 65688385710 131376771420