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13213123230 = 235601732841
BaseRepresentation
bin11000100111001000…
…00100001010011110
31021002211211012120110
430103210010022132
5204030024420410
610023043030450
7645301460106
oct142344041236
937084735513
1013213123230
11567051105a
12268906b426
1313275a2318
148d4ba6206
15524eee720
hex31390429e

13213123230 has 32 divisors (see below), whose sum is σ = 31764303648. Its totient is φ = 3517632000.

The previous prime is 13213123213. The next prime is 13213123247. The reversal of 13213123230 is 3232131231.

It is an interprime number because it is at equal distance from previous prime (13213123213) and next prime (13213123247).

It is a junction number, because it is equal to n+sod(n) for n = 13213123197 and 13213123206.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 348391 + ... + 384450.

It is an arithmetic number, because the mean of its divisors is an integer number (992634489).

Almost surely, 213213123230 is an apocalyptic number.

13213123230 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

13213123230 is an abundant number, since it is smaller than the sum of its proper divisors (18551180418).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

13213123230 is a wasteful number, since it uses less digits than its factorization.

13213123230 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 733452.

The product of its (nonzero) digits is 648, while the sum is 21.

Adding to 13213123230 its reverse (3232131231), we get a palindrome (16445254461).

The spelling of 13213123230 in words is "thirteen billion, two hundred thirteen million, one hundred twenty-three thousand, two hundred thirty".

Divisors: 1 2 3 5 6 10 15 30 601 1202 1803 3005 3606 6010 9015 18030 732841 1465682 2198523 3664205 4397046 7328410 10992615 21985230 440437441 880874882 1321312323 2202187205 2642624646 4404374410 6606561615 13213123230