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12530311351 = 223491911423
BaseRepresentation
bin10111010101101110…
…10110000010110111
31012100020222202202121
423222313112002313
5201130224430401
65431212020411
7622340613655
oct135267260267
935306882677
1012530311351
115350041418
122518461707
131248ca051c
1486c223dd5
154d50c4ca1
hex2eadd60b7

12530311351 has 8 divisors (see below), whose sum is σ = 12590161920. Its totient is φ = 12470493912.

The previous prime is 12530311333. The next prime is 12530311361. The reversal of 12530311351 is 15311303521.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 12530311351 - 27 = 12530311223 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 (12530311361) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1091226 + ... + 1102648.

It is an arithmetic number, because the mean of its divisors is an integer number (1573770240).

Almost surely, 212530311351 is an apocalyptic number.

12530311351 is a deficient number, since it is larger than the sum of its proper divisors (59850569).

12530311351 is a wasteful number, since it uses less digits than its factorization.

12530311351 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16565.

The product of its (nonzero) digits is 1350, while the sum is 25.

Adding to 12530311351 its reverse (15311303521), we get a palindrome (27841614872).

The spelling of 12530311351 in words is "twelve billion, five hundred thirty million, three hundred eleven thousand, three hundred fifty-one".

Divisors: 1 223 4919 11423 1096937 2547329 56189737 12530311351