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1213023211 = 31210511201
BaseRepresentation
bin100100001001101…
…0100001111101011
310010112111222000121
41020103110033223
54441013220321
6320211144111
742026345551
oct11023241753
93115458017
101213023211
115727a1324
1229a2a5037
1316440411a
14b715dbd1
157175e441
hex484d43eb

1213023211 has 12 divisors (see below), whose sum is σ = 1255652472. Its totient is φ = 1171800000.

The previous prime is 1213023187. The next prime is 1213023221. The reversal of 1213023211 is 1123203121.

It is not a de Polignac number, because 1213023211 - 229 = 676152299 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1213023221) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1009411 + ... + 1010611.

It is an arithmetic number, because the mean of its divisors is an integer number (104637706).

Almost surely, 21213023211 is an apocalyptic number.

1213023211 is a deficient number, since it is larger than the sum of its proper divisors (42629261).

1213023211 is a wasteful number, since it uses less digits than its factorization.

1213023211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2314 (or 2283 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 16.

The square root of 1213023211 is about 34828.4827547799. The cubic root of 1213023211 is about 1066.4889753596.

Adding to 1213023211 its reverse (1123203121), we get a palindrome (2336226332).

The spelling of 1213023211 in words is "one billion, two hundred thirteen million, twenty-three thousand, two hundred eleven".