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23131232011280 = 2452831021697527
BaseRepresentation
bin1010100001001101010001…
…10111100000010000010000
310000220022202022220200111002
411100212220313200100100
511012440230343330110
6121110201415041132
74605114330664661
oct520465067402020
9100808668820432
1023131232011280
11740899a493188
122716ba29701a8
13cba35c00a203
1459d7b40c3368
152a1a6a69daa5
hex1509a8de0410

23131232011280 has 40 divisors (see below), whose sum is σ = 53970150219072. Its totient is φ = 9219798474624.

The previous prime is 23131232011241. The next prime is 23131232011291. The reversal of 23131232011280 is 8211023213132.

It is a tau number, because it is divible by the number of its divisors (40).

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, 510826124 + ... + 510871403.

Almost surely, 223131232011280 is an apocalyptic number.

23131232011280 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

23131232011280 is an abundant number, since it is smaller than the sum of its proper divisors (30838918207792).

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

23131232011280 is a wasteful number, since it uses less digits than its factorization.

23131232011280 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1021697823 (or 1021697817 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 29.

The spelling of 23131232011280 in words is "twenty-three trillion, one hundred thirty-one billion, two hundred thirty-two million, eleven thousand, two hundred eighty".

Divisors: 1 2 4 5 8 10 16 20 40 80 283 566 1132 1415 2264 2830 4528 5660 11320 22640 1021697527 2043395054 4086790108 5108487635 8173580216 10216975270 16347160432 20433950540 40867901080 81735802160 289140400141 578280800282 1156561600564 1445702000705 2313123201128 2891404001410 4626246402256 5782808002820 11565616005640 23131232011280