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1312132043 = 7157732029
BaseRepresentation
bin100111000110101…
…1000101111001011
310101110000012210002
41032031120233023
510141401211133
6334111313215
744341636565
oct11615305713
93343005702
101312132043
11613734252
1230751b80b
1317bac50c1
14c639c335
157a2d9ce8
hex4e358bcb

1312132043 has 8 divisors (see below), whose sum is σ = 1332960480. Its totient is φ = 1291368960.

The previous prime is 1312132033. The next prime is 1312132051. The reversal of 1312132043 is 3402312131.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2k-1312132043 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1312132013) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 24953 + ... + 56981.

It is an arithmetic number, because the mean of its divisors is an integer number (166620060).

Almost surely, 21312132043 is an apocalyptic number.

1312132043 is a deficient number, since it is larger than the sum of its proper divisors (20828437).

1312132043 is an equidigital number, since it uses as much as digits as its factorization.

1312132043 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32677.

The product of its (nonzero) digits is 432, while the sum is 20.

The square root of 1312132043 is about 36223.3632204410. The cubic root of 1312132043 is about 1094.7774595536. Note that the first 3 decimals are identical.

Adding to 1312132043 its reverse (3402312131), we get a palindrome (4714444174).

The spelling of 1312132043 in words is "one billion, three hundred twelve million, one hundred thirty-two thousand, forty-three".

Divisors: 1 71 577 32029 40967 2274059 18480733 1312132043