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131213130322020 = 22355323410837029
BaseRepresentation
bin11101110101011001110000…
…000001011101000001100100
3122012120212000122201212102020
4131311121300001131001210
5114144243442330301040
61143022251354543140
736431556455253645
oct3565316001350144
9565525018655366
10131213130322020
11388991a339061a
1212871b97a37ab0
13582a464240ab6
142458a6c4976cc
15102824bd79cd0
hex77567005d064

131213130322020 has 48 divisors (see below), whose sum is σ = 367465786416960. Its totient is φ = 34983594608256.

The previous prime is 131213130322003. The next prime is 131213130322117. The reversal of 131213130322020 is 20223031312131.

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, 205099135 + ... + 205737894.

It is an arithmetic number, because the mean of its divisors is an integer number (7655537217020).

Almost surely, 2131213130322020 is an apocalyptic number.

131213130322020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

131213130322020 is an abundant number, since it is smaller than the sum of its proper divisors (236252656094940).

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

131213130322020 is a wasteful number, since it uses less digits than its factorization.

131213130322020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 410842364 (or 410842362 counting only the distinct ones).

The product of its (nonzero) digits is 1296, while the sum is 24.

Adding to 131213130322020 its reverse (20223031312131), we get a palindrome (151436161634151).

The spelling of 131213130322020 in words is "one hundred thirty-one trillion, two hundred thirteen billion, one hundred thirty million, three hundred twenty-two thousand, twenty".

Divisors: 1 2 3 4 5 6 10 12 15 20 30 60 5323 10646 15969 21292 26615 31938 53230 63876 79845 106460 159690 319380 410837029 821674058 1232511087 1643348116 2054185145 2465022174 4108370290 4930044348 6162555435 8216740580 12325110870 24650221740 2186885505367 4373771010734 6560656516101 8747542021468 10934427526835 13121313032202 21868855053670 26242626064404 32803282580505 43737710107340 65606565161010 131213130322020