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13231155415 = 5313747191257
BaseRepresentation
bin11000101001010001…
…10110100011010111
31021011002202100002011
430110220312203113
5204044133433130
610024525325051
7645610652062
oct142450664327
937132670064
1013231155415
11567a707995
122693106787
13132b246b5a
148d733b8d9
155268b252a
hex314a368d7

13231155415 has 64 divisors (see below), whose sum is σ = 17347903488. Its totient is φ = 9665740800.

The previous prime is 13231155409. The next prime is 13231155451. The reversal of 13231155415 is 51455113231.

13231155415 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 13231155415 - 25 = 13231155383 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (31).

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 51482967 + ... + 51483223.

It is an arithmetic number, because the mean of its divisors is an integer number (271060992).

Almost surely, 213231155415 is an apocalyptic number.

13231155415 is a deficient number, since it is larger than the sum of its proper divisors (4116748073).

13231155415 is a wasteful number, since it uses less digits than its factorization.

13231155415 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 568.

The product of its digits is 9000, while the sum is 31.

Adding to 13231155415 its reverse (51455113231), we get a palindrome (64686268646).

The spelling of 13231155415 in words is "thirteen billion, two hundred thirty-one million, one hundred fifty-five thousand, four hundred fifteen".

Divisors: 1 5 31 37 47 155 185 191 235 257 955 1147 1285 1457 1739 5735 5921 7067 7285 7967 8695 8977 9509 12079 29605 35335 39835 44885 47545 49087 53909 60395 219077 245435 269545 278287 294779 332149 374449 446923 1095385 1391435 1473895 1521697 1660745 1816219 1872245 2234615 2307089 7608485 9081095 10296619 11535445 13854613 51483095 56302789 69273065 71519759 85362293 281513945 357598795 426811465 2646231083 13231155415