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1303103131213 = 131931357168247
BaseRepresentation
bin10010111101100110111…
…111111100111001001101
311121120112111102211222211
4102331212333330321031
5132322223400144323
62434345354310421
7163101052600222
oct22754677747115
94546474384884
101303103131213
11462708822644
12190672728411
1395b60c7a760
14470db759949
1523d6b58b70d
hex12f66ffce4d

1303103131213 has 16 divisors (see below), whose sum is σ = 1477257819520. Its totient is φ = 1139512660416.

The previous prime is 1303103131201. The next prime is 1303103131229. The reversal of 1303103131213 is 3121313013031.

It is not a de Polignac number, because 1303103131213 - 229 = 1302566260301 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1303103131243) 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, 7661056 + ... + 7829302.

It is an arithmetic number, because the mean of its divisors is an integer number (92328613720).

Almost surely, 21303103131213 is an apocalyptic number.

1303103131213 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

It is an amenable number.

1303103131213 is a deficient number, since it is larger than the sum of its proper divisors (174154688307).

1303103131213 is a wasteful number, since it uses less digits than its factorization.

1303103131213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 199636.

The product of its (nonzero) digits is 486, while the sum is 22.

Adding to 1303103131213 its reverse (3121313013031), we get a palindrome (4424416144244).

The spelling of 1303103131213 in words is "one trillion, three hundred three billion, one hundred three million, one hundred thirty-one thousand, two hundred thirteen".

Divisors: 1 13 19 247 31357 168247 407641 595783 2187211 3196693 7745179 41557009 5275721179 68584375327 100238702401 1303103131213