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13123141431 = 35871174507
BaseRepresentation
bin11000011100011001…
…10011111100110111
31020212120111122202020
430032030303330313
5203334011011211
610010110244223
7643126601361
oct141614637467
936776448666
1013123141431
115624742434
122662ab6673
131311a5875a
148c6c61d31
1551c178306
hex30e333f37

13123141431 has 8 divisors (see below), whose sum is σ = 17498054784. Its totient is φ = 8748494520.

The previous prime is 13123141417. The next prime is 13123141439. The reversal of 13123141431 is 13414132131.

It is a happy number.

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

It is not a de Polignac number, because 13123141431 - 217 = 13123010359 is a prime.

It is a super-2 number, since 2×131231414312 (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13123141439) 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, 138880 + ... + 213386.

It is an arithmetic number, because the mean of its divisors is an integer number (2187256848).

Almost surely, 213123141431 is an apocalyptic number.

13123141431 is a deficient number, since it is larger than the sum of its proper divisors (4374913353).

13123141431 is an equidigital number, since it uses as much as digits as its factorization.

13123141431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 133221.

The product of its digits is 864, while the sum is 24.

Adding to 13123141431 its reverse (13414132131), we get a palindrome (26537273562).

The spelling of 13123141431 in words is "thirteen billion, one hundred twenty-three million, one hundred forty-one thousand, four hundred thirty-one".

Divisors: 1 3 58711 74507 176133 223521 4374380477 13123141431