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12443213130 = 23510112913181
BaseRepresentation
bin10111001011010110…
…00101110101001010
31012010012002201110120
423211223011311022
5200440430310010
65414421124110
7620232365205
oct134553056512
935105081416
1012443213130
115305962217
1224b3259636
131233c2630a
1486083093c
154cc61ce70
hex2e5ac5d4a

12443213130 has 64 divisors (see below), whose sum is σ = 30192241536. Its totient is φ = 3281760000.

The previous prime is 12443213129. The next prime is 12443213137. The reversal of 12443213130 is 3131234421.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 12443213130.

It is not an unprimeable number, because it can be changed into a prime (12443213137) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 3910140 + ... + 3913320.

It is an arithmetic number, because the mean of its divisors is an integer number (471753774).

Almost surely, 212443213130 is an apocalyptic number.

12443213130 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

12443213130 is an abundant number, since it is smaller than the sum of its proper divisors (17749028406).

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

12443213130 is a wasteful number, since it uses less digits than its factorization.

12443213130 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4583.

The product of its (nonzero) digits is 1728, while the sum is 24.

Adding to 12443213130 its reverse (3131234421), we get a palindrome (15574447551).

The spelling of 12443213130 in words is "twelve billion, four hundred forty-three million, two hundred thirteen thousand, one hundred thirty".

Divisors: 1 2 3 5 6 10 15 30 101 202 303 505 606 1010 1291 1515 2582 3030 3181 3873 6362 6455 7746 9543 12910 15905 19086 19365 31810 38730 47715 95430 130391 260782 321281 391173 642562 651955 782346 963843 1303910 1606405 1927686 1955865 3212810 3911730 4106671 4819215 8213342 9638430 12320013 20533355 24640026 41066710 61600065 123200130 414773771 829547542 1244321313 2073868855 2488642626 4147737710 6221606565 12443213130