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13122043423 = 71853721649
BaseRepresentation
bin11000011100010001…
…00111111000011111
31020212111102212120021
430032020213320133
5203333220342143
610010030533011
7643114346236
oct141610477037
936774385507
1013122043423
115624062495
122662667167
131311762a48
148c6a57b1d
1551c00cced
hex30e227e1f

13122043423 has 8 divisors (see below), whose sum is σ = 13309034400. Its totient is φ = 12935112960.

The previous prime is 13122043391. The next prime is 13122043469. The reversal of 13122043423 is 32434022131.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 13122043423 - 25 = 13122043391 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 (13122040423) 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, 595303 + ... + 616951.

It is an arithmetic number, because the mean of its divisors is an integer number (1663629300).

Almost surely, 213122043423 is an apocalyptic number.

13122043423 is a deficient number, since it is larger than the sum of its proper divisors (186990977).

13122043423 is an equidigital number, since it uses as much as digits as its factorization.

13122043423 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30257.

The product of its (nonzero) digits is 3456, while the sum is 25.

Adding to 13122043423 its reverse (32434022131), we get a palindrome (45556065554).

The spelling of 13122043423 in words is "thirteen billion, one hundred twenty-two million, forty-three thousand, four hundred twenty-three".

Divisors: 1 71 8537 21649 606127 1537079 184817513 13122043423