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13110131 = 39733023
BaseRepresentation
bin110010000000…
…101101110011
3220200001201102
4302000231303
511324011011
61144555015
7216301646
oct62005563
926601642
1013110131
117444921
124482a6b
132940398
141a53a5d
15123e73b
hexc80b73

13110131 has 4 divisors (see below), whose sum is σ = 13143552. Its totient is φ = 13076712.

The previous prime is 13110121. The next prime is 13110137. The reversal of 13110131 is 13101131.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 13101131 = 38933679.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2k-13110131 is a prime.

It is a super-2 number, since 2×131101312 = 343751069674322, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13110137) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 16115 + ... + 16908.

It is an arithmetic number, because the mean of its divisors is an integer number (3285888).

Almost surely, 213110131 is an apocalyptic number.

13110131 is a deficient number, since it is larger than the sum of its proper divisors (33421).

13110131 is an equidigital number, since it uses as much as digits as its factorization.

13110131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33420.

The product of its (nonzero) digits is 9, while the sum is 11.

The square root of 13110131 is about 3620.7914880589. The cubic root of 13110131 is about 235.7955893042.

Adding to 13110131 its reverse (13101131), we get a palindrome (26211262).

The spelling of 13110131 in words is "thirteen million, one hundred ten thousand, one hundred thirty-one".

Divisors: 1 397 33023 13110131