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13231030103 = 28571463093
BaseRepresentation
bin11000101001010000…
…10111111101010111
31021011002111222011222
430110220113331113
5204044120430403
610024522520555
7645606620534
oct142450277527
937132458158
1013231030103
11567a631825
12269306615b
13132b201ac5
148d7307d8b
1552688a338
hex314a17f57

13231030103 has 4 divisors (see below), whose sum is σ = 13231521768. Its totient is φ = 13230538440.

The previous prime is 13231030097. The next prime is 13231030123. The reversal of 13231030103 is 30103013231.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2k-13231030103 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13231030123) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 202976 + ... + 260117.

It is an arithmetic number, because the mean of its divisors is an integer number (3307880442).

Almost surely, 213231030103 is an apocalyptic number.

13231030103 is a deficient number, since it is larger than the sum of its proper divisors (491665).

13231030103 is an equidigital number, since it uses as much as digits as its factorization.

13231030103 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 491664.

The product of its (nonzero) digits is 162, while the sum is 17.

Adding to 13231030103 its reverse (30103013231), we get a palindrome (43334043334).

The spelling of 13231030103 in words is "thirteen billion, two hundred thirty-one million, thirty thousand, one hundred three".

Divisors: 1 28571 463093 13231030103