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131358746840 = 23529491923021
BaseRepresentation
bin111101001010110010…
…1110110100011011000
3110120001121122201212212
41322111211312203120
54123010314344330
6140202333454252
712330122632256
oct1722545664330
9416047581785
10131358746840
1150788651802
122155b941388
13c50553b249
146501b1d5d6
15363c2aa295
hex1e959768d8

131358746840 has 64 divisors (see below), whose sum is σ = 305824248000. Its totient is φ = 50719137280.

The previous prime is 131358746839. The next prime is 131358746863. The reversal of 131358746840 is 48647853131.

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, 5694530 + ... + 5717550.

It is an arithmetic number, because the mean of its divisors is an integer number (4778503875).

Almost surely, 2131358746840 is an apocalyptic number.

131358746840 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

131358746840 is an abundant number, since it is smaller than the sum of its proper divisors (174465501160).

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

131358746840 is a wasteful number, since it uses less digits than its factorization.

131358746840 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27980 (or 27976 counting only the distinct ones).

The product of its (nonzero) digits is 1935360, while the sum is 50.

The spelling of 131358746840 in words is "one hundred thirty-one billion, three hundred fifty-eight million, seven hundred forty-six thousand, eight hundred forty".

Divisors: 1 2 4 5 8 10 20 29 40 58 116 145 232 290 580 1160 4919 9838 19676 23021 24595 39352 46042 49190 92084 98380 115105 142651 184168 196760 230210 285302 460420 570604 667609 713255 920840 1141208 1335218 1426510 2670436 2853020 3338045 5340872 5706040 6676090 13352180 26704360 113240299 226480598 452961196 566201495 905922392 1132402990 2264805980 3283968671 4529611960 6567937342 13135874684 16419843355 26271749368 32839686710 65679373420 131358746840