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13124440103 = 48726949569
BaseRepresentation
bin11000011100100011…
…10001000000100111
31020212122221122012012
430032101301000213
5203334324040403
610010154144435
7643143620525
oct141621610047
936778848165
1013124440103
11562544a115
12266342211b
1313120c18b8
148c70bd315
1551c332ed8
hex30e471027

13124440103 has 4 divisors (see below), whose sum is σ = 13151390160. Its totient is φ = 13097490048.

The previous prime is 13124440093. The next prime is 13124440127. The reversal of 13124440103 is 30104442131.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 30104442131 = 38119789749.

It is a cyclic number.

It is not a de Polignac number, because 13124440103 - 212 = 13124436007 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 (13124440183) 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, 13474298 + ... + 13475271.

It is an arithmetic number, because the mean of its divisors is an integer number (3287847540).

Almost surely, 213124440103 is an apocalyptic number.

13124440103 is a deficient number, since it is larger than the sum of its proper divisors (26950057).

13124440103 is an equidigital number, since it uses as much as digits as its factorization.

13124440103 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26950056.

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

Adding to 13124440103 its reverse (30104442131), we get a palindrome (43228882234).

The spelling of 13124440103 in words is "thirteen billion, one hundred twenty-four million, four hundred forty thousand, one hundred three".

Divisors: 1 487 26949569 13124440103