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12331331292 = 2237612406583
BaseRepresentation
bin10110111110000000…
…10010111011011100
31011211101120112102210
423133000102323130
5200223310100132
65355343120420
7614403405120
oct133700227334
934741515383
1012331331292
115258795795
1224818a3110
1312169b2547
1484da29580
154c28bcbcc
hex2df012edc

12331331292 has 48 divisors (see below), whose sum is σ = 33422638592. Its totient is φ = 3465478080.

The previous prime is 12331331291. The next prime is 12331331323. The reversal of 12331331292 is 29213313321.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12331331291) 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, 1198168 + ... + 1208415.

Almost surely, 212331331292 is an apocalyptic number.

12331331292 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

12331331292 is an abundant number, since it is smaller than the sum of its proper divisors (21091307300).

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

12331331292 is a wasteful number, since it uses less digits than its factorization.

12331331292 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2406658 (or 2406656 counting only the distinct ones).

The product of its digits is 5832, while the sum is 30.

The spelling of 12331331292 in words is "twelve billion, three hundred thirty-one million, three hundred thirty-one thousand, two hundred ninety-two".

Divisors: 1 2 3 4 6 7 12 14 21 28 42 61 84 122 183 244 366 427 732 854 1281 1708 2562 5124 2406583 4813166 7219749 9626332 14439498 16846081 28878996 33692162 50538243 67384324 101076486 146801563 202152972 293603126 440404689 587206252 880809378 1027610941 1761618756 2055221882 3082832823 4110443764 6165665646 12331331292