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12960311 = 713142421
BaseRepresentation
bin110001011100…
…001000110111
3220101110012112
4301130020313
511304212221
61141441235
7215106110
oct61341067
926343175
1012960311
117352301
12441021b
1328ba130
141a15207
15121015b
hexc5c237

12960311 has 8 divisors (see below), whose sum is σ = 15951264. Its totient is φ = 10254240.

The previous prime is 12960289. The next prime is 12960317. The reversal of 12960311 is 11306921.

It is a happy number.

12960311 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 12960311 - 214 = 12943927 is a prime.

It is a super-2 number, since 2×129603112 = 335939322433442, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12960317) 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, 71120 + ... + 71301.

It is an arithmetic number, because the mean of its divisors is an integer number (1993908).

Almost surely, 212960311 is an apocalyptic number.

12960311 is a deficient number, since it is larger than the sum of its proper divisors (2990953).

12960311 is a wasteful number, since it uses less digits than its factorization.

12960311 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 142441.

The product of its (nonzero) digits is 324, while the sum is 23.

The square root of 12960311 is about 3600.0431941853. The cubic root of 12960311 is about 234.8939373499.

The spelling of 12960311 in words is "twelve million, nine hundred sixty thousand, three hundred eleven".

Divisors: 1 7 13 91 142421 996947 1851473 12960311