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13044012321031 = 31420774591001
BaseRepresentation
bin1011110111010000101110…
…1110001000100100000111
31201011222212122110002111121
42331310023232020210013
53202203114123233111
643424200405214411
72514253533223216
oct275641356104407
951158778402447
1013044012321031
114179a30997a2a
121568025401407
13738078084523
1433149543307d
15179488529871
hexbdd0bb88907

13044012321031 has 4 divisors (see below), whose sum is σ = 13464786912064. Its totient is φ = 12623237730000.

The previous prime is 13044012321029. The next prime is 13044012321037. The reversal of 13044012321031 is 13012321044031.

13044012321031 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 13044012321031 - 21 = 13044012321029 is a prime.

It is a super-2 number, since 2×130440123210312 (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 13044012320987 and 13044012321005.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13044012321037) 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, 210387295470 + ... + 210387295531.

It is an arithmetic number, because the mean of its divisors is an integer number (3366196728016).

Almost surely, 213044012321031 is an apocalyptic number.

13044012321031 is a deficient number, since it is larger than the sum of its proper divisors (420774591033).

13044012321031 is an equidigital number, since it uses as much as digits as its factorization.

13044012321031 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 420774591032.

The product of its (nonzero) digits is 1728, while the sum is 25.

Adding to 13044012321031 its reverse (13012321044031), we get a palindrome (26056333365062).

The spelling of 13044012321031 in words is "thirteen trillion, forty-four billion, twelve million, three hundred twenty-one thousand, thirty-one".

Divisors: 1 31 420774591001 13044012321031