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13012111213 = 311405129873
BaseRepresentation
bin11000001111001010…
…10000111101101101
31020120211120201220221
430013211100331231
5203122100024323
65551102411341
7640311056203
oct140745207555
936524521827
1013012111213
115577aa7822
122631890b51
1312c4a524ba
148b61dd073
1551254555d
hex307950f6d

13012111213 has 8 divisors (see below), whose sum is σ = 13433262336. Its totient is φ = 12591048000.

The previous prime is 13012111207. The next prime is 13012111237. The reversal of 13012111213 is 31211121031.

It is a happy number.

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 13012111213 - 229 = 12475240301 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 (13012111613) 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, 420645 + ... + 450517.

It is an arithmetic number, because the mean of its divisors is an integer number (1679157792).

Almost surely, 213012111213 is an apocalyptic number.

It is an amenable number.

13012111213 is a deficient number, since it is larger than the sum of its proper divisors (421151123).

13012111213 is a wasteful number, since it uses less digits than its factorization.

13012111213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43955.

The product of its (nonzero) digits is 36, while the sum is 16.

Adding to 13012111213 its reverse (31211121031), we get a palindrome (44223232244).

The spelling of 13012111213 in words is "thirteen billion, twelve million, one hundred eleven thousand, two hundred thirteen".

Divisors: 1 31 14051 29873 435581 926063 419745523 13012111213