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12430131103 = 13956163931
BaseRepresentation
bin10111001001110010…
…01011111110011111
31012002021111002022001
423210321023332133
5200424103143403
65413232503131
7620013241165
oct134471137637
935067432261
1012430131103
1152a9537525
1224aa9aaaa7
1312312c5980
1485cbc7235
154cb3d6c1d
hex2e4e4bf9f

12430131103 has 4 divisors (see below), whose sum is σ = 13386295048. Its totient is φ = 11473967160.

The previous prime is 12430131079. The next prime is 12430131143. The reversal of 12430131103 is 30113103421.

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

It is a cyclic number.

It is not a de Polignac number, because 12430131103 - 25 = 12430131071 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 (12430131143) 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, 478081953 + ... + 478081978.

It is an arithmetic number, because the mean of its divisors is an integer number (3346573762).

Almost surely, 212430131103 is an apocalyptic number.

12430131103 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

12430131103 is a deficient number, since it is larger than the sum of its proper divisors (956163945).

12430131103 is an equidigital number, since it uses as much as digits as its factorization.

12430131103 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 956163944.

The product of its (nonzero) digits is 216, while the sum is 19.

Adding to 12430131103 its reverse (30113103421), we get a palindrome (42543234524).

The spelling of 12430131103 in words is "twelve billion, four hundred thirty million, one hundred thirty-one thousand, one hundred three".

Divisors: 1 13 956163931 12430131103