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1311132230 = 25131113223
BaseRepresentation
bin100111000100110…
…0100101001000110
310101101010102021222
41032021210221012
510141122212410
6334034040342
744330303642
oct11611445106
93341112258
101311132230
11613111061
123071190b2
1317b834cb5
14c61bbc22
157a18d955
hex4e264a46

1311132230 has 8 divisors (see below), whose sum is σ = 2360038032. Its totient is φ = 524452888.

The previous prime is 1311132211. The next prime is 1311132239. The reversal of 1311132230 is 322311131.

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

It is a junction number, because it is equal to n+sod(n) for n = 1311132199 and 1311132208.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1311132239) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 65556602 + ... + 65556621.

It is an arithmetic number, because the mean of its divisors is an integer number (295004754).

Almost surely, 21311132230 is an apocalyptic number.

1311132230 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1311132230 is a deficient number, since it is larger than the sum of its proper divisors (1048905802).

1311132230 is a wasteful number, since it uses less digits than its factorization.

1311132230 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 131113230.

The product of its (nonzero) digits is 108, while the sum is 17.

The square root of 1311132230 is about 36209.5599255224. The cubic root of 1311132230 is about 1094.4993242159.

Adding to 1311132230 its reverse (322311131), we get a palindrome (1633443361).

The spelling of 1311132230 in words is "one billion, three hundred eleven million, one hundred thirty-two thousand, two hundred thirty".

Divisors: 1 2 5 10 131113223 262226446 655566115 1311132230