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13231122223 = 1161131150523
BaseRepresentation
bin11000101001010001…
…01110011100101111
31021011002200122112211
430110220232130233
5204044131402343
610024524511251
7645610453234
oct142450563457
937132618484
1013231122223
11567a694a60
1226930ab527
13132b234a07
148d732d78b
155268a779d
hex314a2e72f

13231122223 has 16 divisors (see below), whose sum is σ = 14782660992. Its totient is φ = 11740716000.

The previous prime is 13231122221. The next prime is 13231122241. The reversal of 13231122223 is 32222113231.

It is a cyclic number.

It is not a de Polignac number, because 13231122223 - 21 = 13231122221 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 13231122194 and 13231122203.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13231122221) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 12640 + ... + 163162.

It is an arithmetic number, because the mean of its divisors is an integer number (923916312).

Almost surely, 213231122223 is an apocalyptic number.

13231122223 is a deficient number, since it is larger than the sum of its proper divisors (1551538769).

13231122223 is a wasteful number, since it uses less digits than its factorization.

13231122223 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 150726.

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

Adding to 13231122223 its reverse (32222113231), we get a palindrome (45453235454).

The spelling of 13231122223 in words is "thirteen billion, two hundred thirty-one million, one hundred twenty-two thousand, two hundred twenty-three".

Divisors: 1 11 61 131 671 1441 7991 87901 150523 1655753 9181903 19718513 101000933 216903643 1202829293 13231122223