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13123104031 = 103304141897
BaseRepresentation
bin11000011100011001…
…01010110100011111
31020212120102202110001
430032030222310133
5203334003312111
610010105355131
7643126354342
oct141614526437
936776382401
1013123104031
115624717324
122662a98aa7
131311a4471b
148c6c52459
1551c16c1c1
hex30e32ad1f

13123104031 has 8 divisors (see below), whose sum is σ = 13255186464. Its totient is φ = 12991111680.

The previous prime is 13123104011. The next prime is 13123104067. The reversal of 13123104031 is 13040132131.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2k-13123104031 is a prime.

It is a super-2 number, since 2×131231040312 (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13123104011) 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, 292275 + ... + 334171.

It is an arithmetic number, because the mean of its divisors is an integer number (1656898308).

Almost surely, 213123104031 is an apocalyptic number.

13123104031 is a deficient number, since it is larger than the sum of its proper divisors (132082433).

13123104031 is a wasteful number, since it uses less digits than its factorization.

13123104031 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45041.

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

Adding to 13123104031 its reverse (13040132131), we get a palindrome (26163236162).

The spelling of 13123104031 in words is "thirteen billion, one hundred twenty-three million, one hundred four thousand, thirty-one".

Divisors: 1 103 3041 41897 313223 4315391 127408777 13123104031