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13231312424 = 2311150355823
BaseRepresentation
bin11000101001010010…
…11100111000101000
31021011010001022110022
430110221130320220
5204044203444144
610024532540012
7645612204611
oct142451347050
937133038408
1013231312424
11567a804950
122693181608
13132b2a0465
148d737cc08
155268e3cee
hex314a5ce28

13231312424 has 16 divisors (see below), whose sum is σ = 27064048320. Its totient is φ = 6014232880.

The previous prime is 13231312387. The next prime is 13231312429. The reversal of 13231312424 is 42421313231.

It is a super-2 number, since 2×132313124242 (a number of 21 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 13231312393 and 13231312402.

It is not an unprimeable number, because it can be changed into a prime (13231312429) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 75177824 + ... + 75177999.

It is an arithmetic number, because the mean of its divisors is an integer number (1691503020).

Almost surely, 213231312424 is an apocalyptic number.

It is an amenable number.

13231312424 is an abundant number, since it is smaller than the sum of its proper divisors (13832735896).

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

13231312424 is a wasteful number, since it uses less digits than its factorization.

13231312424 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 150355840 (or 150355836 counting only the distinct ones).

The product of its digits is 3456, while the sum is 26.

Adding to 13231312424 its reverse (42421313231), we get a palindrome (55652625655).

The spelling of 13231312424 in words is "thirteen billion, two hundred thirty-one million, three hundred twelve thousand, four hundred twenty-four".

Divisors: 1 2 4 8 11 22 44 88 150355823 300711646 601423292 1202846584 1653914053 3307828106 6615656212 13231312424