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20200312312312 = 23112910972619109
BaseRepresentation
bin1001001011111010000000…
…11100001001000111111000
32122112010112111102022002211
410211331000130021013320
510121430214422443222
6110543521222104504
74153265366415256
oct445750034110770
978463474368084
1020200312312312
1164889a4752090
122322b5787b134
13b36b5c221ba2
144db9b39d95d6
152506ca94c277
hex125f407091f8

20200312312312 has 64 divisors (see below), whose sum is σ = 43135751340000. Its totient is φ = 8784007303680.

The previous prime is 20200312312289. The next prime is 20200312312319. The reversal of 20200312312312 is 21321321300202.

It is a Harshad number since it is a multiple of its sum of digits (22).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20200312312319) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 36031387 + ... + 36587722.

Almost surely, 220200312312312 is an apocalyptic number.

20200312312312 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

20200312312312 is an abundant number, since it is smaller than the sum of its proper divisors (22935439027688).

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

20200312312312 is a wasteful number, since it uses less digits than its factorization.

20200312312312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 72619264 (or 72619260 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 22.

Adding to 20200312312312 its reverse (21321321300202), we get a palindrome (41521633612514).

The spelling of 20200312312312 in words is "twenty trillion, two hundred billion, three hundred twelve million, three hundred twelve thousand, three hundred twelve".

Divisors: 1 2 4 8 11 22 29 44 58 88 109 116 218 232 319 436 638 872 1199 1276 2398 2552 3161 4796 6322 9592 12644 25288 34771 69542 139084 278168 72619109 145238218 290476436 580952872 798810199 1597620398 2105954161 3195240796 4211908322 6390481592 7915482881 8423816644 15830965762 16847633288 23165495771 31661931524 46330991542 63323863048 87070311691 92661983084 174140623382 185323966168 229549003549 348281246764 459098007098 696562493528 918196014196 1836392028392 2525039039039 5050078078078 10100156156156 20200312312312