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1312130434 = 25379156691
BaseRepresentation
bin100111000110101…
…1000010110000010
310101110000010120111
41032031120112002
510141401133214
6334111301534
744341632106
oct11615302602
93343003514
101312130434
1161373301a
1230751a8aa
1317bac4454
14c639b906
157a2d95c4
hex4e358582

1312130434 has 16 divisors (see below), whose sum is σ = 2030728320. Its totient is φ = 635534640.

The previous prime is 1312130419. The next prime is 1312130447. The reversal of 1312130434 is 4340312131.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 69972 + ... + 86719.

It is an arithmetic number, because the mean of its divisors is an integer number (126920520).

Almost surely, 21312130434 is an apocalyptic number.

1312130434 is a deficient number, since it is larger than the sum of its proper divisors (718597886).

1312130434 is a wasteful number, since it uses less digits than its factorization.

1312130434 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 156825.

The product of its (nonzero) digits is 864, while the sum is 22.

The square root of 1312130434 is about 36223.3410110111. The cubic root of 1312130434 is about 1094.7770120637. Note that the first 3 decimals are identical.

Adding to 1312130434 its reverse (4340312131), we get a palindrome (5652442565).

The spelling of 1312130434 in words is "one billion, three hundred twelve million, one hundred thirty thousand, four hundred thirty-four".

Divisors: 1 2 53 79 106 158 4187 8374 156691 313382 8304623 12378589 16609246 24757178 656065217 1312130434