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13211331311 = 13995399733
BaseRepresentation
bin11000100110111010…
…01110101011101111
31021002201110011112002
430103131032223233
5204024100100221
610022540402515
7645250314623
oct142335165357
937081404462
1013211331311
11566a4a7832
12268854643b
1313270c5809
148d485b183
15524c9880b
hex31374eaef

13211331311 has 8 divisors (see below), whose sum is σ = 13320473040. Its totient is φ = 13102391232.

The previous prime is 13211331277. The next prime is 13211331317. The reversal of 13211331311 is 11313311231.

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 13211331311 - 26 = 13211331247 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13211331317) 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, 82601 + ... + 182333.

It is an arithmetic number, because the mean of its divisors is an integer number (1665059130).

Almost surely, 213211331311 is an apocalyptic number.

13211331311 is a deficient number, since it is larger than the sum of its proper divisors (109141729).

13211331311 is an equidigital number, since it uses as much as digits as its factorization.

13211331311 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 100825.

The product of its digits is 162, while the sum is 20.

Adding to 13211331311 its reverse (11313311231), we get a palindrome (24524642542).

The spelling of 13211331311 in words is "thirteen billion, two hundred eleven million, three hundred thirty-one thousand, three hundred eleven".

Divisors: 1 139 953 99733 132467 13862887 95045549 13211331311