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20001000032312 = 2313409470213467
BaseRepresentation
bin1001000110000110110001…
…00000001000100000111000
32121211002002002012102002112
410203003120200020200320
510110144022002013222
6110312155500151452
74133011266115655
oct443033040104070
977732062172075
1020001000032312
116411416103122
1222b03b2538588
13b21117532830
144d20a6db6c2c
1524a412a71be2
hex1230d8808838

20001000032312 has 32 divisors (see below), whose sum is σ = 40485379594800. Its totient is φ = 9208660518144.

The previous prime is 20001000032281. The next prime is 20001000032333. The reversal of 20001000032312 is 21323000010002.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 235064198 + ... + 235149269.

Almost surely, 220001000032312 is an apocalyptic number.

It is an amenable number.

20001000032312 is an abundant number, since it is smaller than the sum of its proper divisors (20484379562488).

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

20001000032312 is a wasteful number, since it uses less digits than its factorization.

20001000032312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 470213895 (or 470213891 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 14.

Adding to 20001000032312 its reverse (21323000010002), we get a palindrome (41324000042314).

The spelling of 20001000032312 in words is "twenty trillion, one billion, thirty-two thousand, three hundred twelve".

Divisors: 1 2 4 8 13 26 52 104 409 818 1636 3272 5317 10634 21268 42536 470213467 940426934 1880853868 3761707736 6112775071 12225550142 24451100284 48902200568 192317308003 384634616006 769269232012 1538538464024 2500125004039 5000250008078 10000500016156 20001000032312