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13331231140 = 225666561557
BaseRepresentation
bin11000110101001101…
…00111000110100100
31021102002001201011111
430122212213012210
5204300243344030
610042502314404
7651234411043
oct143246470644
937362051144
1013331231140
1157211502a7
122700728a04
131345bb5c66
1490674c55a
1553057e62a
hex31a9a71a4

13331231140 has 12 divisors (see below), whose sum is σ = 27995585436. Its totient is φ = 5332492448.

The previous prime is 13331231129. The next prime is 13331231141. The reversal of 13331231140 is 4113213331.

It can be written as a sum of positive squares in 2 ways, for example, as 5943484836 + 7387746304 = 77094^2 + 85952^2 .

It is not an unprimeable number, because it can be changed into a prime (13331231141) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 333280759 + ... + 333280798.

It is an arithmetic number, because the mean of its divisors is an integer number (2332965453).

Almost surely, 213331231140 is an apocalyptic number.

13331231140 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

13331231140 is an abundant number, since it is smaller than the sum of its proper divisors (14664354296).

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

13331231140 is a wasteful number, since it uses less digits than its factorization.

13331231140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 666561566 (or 666561564 counting only the distinct ones).

The product of its (nonzero) digits is 648, while the sum is 22.

Adding to 13331231140 its reverse (4113213331), we get a palindrome (17444444471).

The spelling of 13331231140 in words is "thirteen billion, three hundred thirty-one million, two hundred thirty-one thousand, one hundred forty".

Divisors: 1 2 4 5 10 20 666561557 1333123114 2666246228 3332807785 6665615570 13331231140