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13231214420 = 2252099315179
BaseRepresentation
bin11000101001010010…
…00100111101010100
31021011002212100000112
430110221010331110
5204044142330140
610024530502152
7645611316104
oct142451047524
937132770015
1013231214420
11567a748256
122693134958
13132b267978
148d7355204
155268c4c65
hex314a44f54

13231214420 has 24 divisors (see below), whose sum is σ = 27798876000. Its totient is φ = 5289947552.

The previous prime is 13231214411. The next prime is 13231214429. The reversal of 13231214420 is 2441213231.

It is an interprime number because it is at equal distance from previous prime (13231214411) and next prime (13231214429).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13231214429) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 115610 + ... + 199569.

It is an arithmetic number, because the mean of its divisors is an integer number (1158286500).

Almost surely, 213231214420 is an apocalyptic number.

13231214420 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

13231214420 is an abundant number, since it is smaller than the sum of its proper divisors (14567661580).

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

13231214420 is a wasteful number, since it uses less digits than its factorization.

13231214420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 317287 (or 317285 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 23.

Adding to 13231214420 its reverse (2441213231), we get a palindrome (15672427651).

The spelling of 13231214420 in words is "thirteen billion, two hundred thirty-one million, two hundred fourteen thousand, four hundred twenty".

Divisors: 1 2 4 5 10 20 2099 4198 8396 10495 20990 41980 315179 630358 1260716 1575895 3151790 6303580 661560721 1323121442 2646242884 3307803605 6615607210 13231214420