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13223102031 = 3210859135301
BaseRepresentation
bin11000101000010100…
…01000011001001111
31021010112121011220200
430110022020121033
5204040103231111
610024040544543
7645452340606
oct142412103117
937115534820
1013223102031
1156761072a7
122690482153
131329687339
148d6242a3d
15525d21256
hex31428864f

13223102031 has 12 divisors (see below), whose sum is σ = 19101936360. Its totient is φ = 8814524400.

The previous prime is 13223102021. The next prime is 13223102047. The reversal of 13223102031 is 13020132231.

13223102031 is a `hidden beast` number, since 1 + 322 + 310 + 2 + 0 + 31 = 666.

It is not a de Polignac number, because 13223102031 - 29 = 13223101519 is a prime.

It is a super-2 number, since 2×132231020312 (a number of 21 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 13223101995 and 13223102013.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13223102021) 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, 30081 + ... + 165381.

It is an arithmetic number, because the mean of its divisors is an integer number (1591828030).

Almost surely, 213223102031 is an apocalyptic number.

13223102031 is a deficient number, since it is larger than the sum of its proper divisors (5878834329).

13223102031 is a wasteful number, since it uses less digits than its factorization.

13223102031 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 146166 (or 146163 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 18.

Adding to 13223102031 its reverse (13020132231), we get a palindrome (26243234262).

The spelling of 13223102031 in words is "thirteen billion, two hundred twenty-three million, one hundred two thousand, thirty-one".

Divisors: 1 3 9 10859 32577 97731 135301 405903 1217709 1469233559 4407700677 13223102031