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12412505231 = 719221612273
BaseRepresentation
bin10111000111101011…
…11100110010001111
31012001001022121010222
423203311330302033
5200410100131411
65411403021555
7616410360620
oct134365746217
935031277128
1012412505231
11529a598995
1224a4b0a8bb
13122a764069
1485a719a47
154c9aa44db
hex2e3d7cc8f

12412505231 has 24 divisors (see below), whose sum is σ = 14985150624. Its totient is φ = 10070231040.

The previous prime is 12412505179. The next prime is 12412505249. The reversal of 12412505231 is 13250521421.

It is not a de Polignac number, because 12412505231 - 218 = 12412243087 is a prime.

It is a super-2 number, since 2×124125052312 (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 12412505231.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12412505531) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 5459711 + ... + 5461983.

It is an arithmetic number, because the mean of its divisors is an integer number (624381276).

Almost surely, 212412505231 is an apocalyptic number.

12412505231 is a deficient number, since it is larger than the sum of its proper divisors (2572645393).

12412505231 is a wasteful number, since it uses less digits than its factorization.

12412505231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4479 (or 4460 counting only the distinct ones).

The product of its (nonzero) digits is 2400, while the sum is 26.

The spelling of 12412505231 in words is "twelve billion, four hundred twelve million, five hundred five thousand, two hundred thirty-one".

Divisors: 1 7 19 133 361 2161 2273 2527 15127 15911 41059 43187 287413 302309 780121 820553 4911953 5460847 5743871 34383671 93327107 653289749 1773215033 12412505231