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12131333332320 = 2535683346910667
BaseRepresentation
bin1011000010001000101111…
…0100000101110101100000
31120221202002110220122111210
42300202023310011311200
53042224432313113240
641445020235110120
72361313514635056
oct260421364056540
946852073818453
1012131333332320
113957962448274
12143b172ba2340
1369cc978a0047
142dd2341a41d6
1516086cd5a780
hexb088bd05d60

12131333332320 has 192 divisors, whose sum is σ = 38284270375680. Its totient is φ = 3229051803648.

The previous prime is 12131333332301. The next prime is 12131333332373. The reversal of 12131333332320 is 2323333313121.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1137271627 + ... + 1137282293.

It is an arithmetic number, because the mean of its divisors is an integer number (199397241540).

Almost surely, 212131333332320 is an apocalyptic number.

12131333332320 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 12131333332320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (19142135187840).

12131333332320 is an abundant number, since it is smaller than the sum of its proper divisors (26152937043360).

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

12131333332320 is a wasteful number, since it uses less digits than its factorization.

12131333332320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14837 (or 14829 counting only the distinct ones).

The product of its (nonzero) digits is 17496, while the sum is 30.

Adding to 12131333332320 its reverse (2323333313121), we get a palindrome (14454666645441).

The spelling of 12131333332320 in words is "twelve trillion, one hundred thirty-one billion, three hundred thirty-three million, three hundred thirty-two thousand, three hundred twenty".