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13102012013 = 17770706589
BaseRepresentation
bin11000011001111000…
…01101011001101101
31020211002202011122012
430030330031121231
5203313103341023
610004033331005
7642452156516
oct141474153155
936732664565
1013102012013
115613820602
122657a06a65
13130a56b23c
148c4121a0d
1551a3a2978
hex30cf0d66d

13102012013 has 4 divisors (see below), whose sum is σ = 13872718620. Its totient is φ = 12331305408.

The previous prime is 13102012009. The next prime is 13102012043. The reversal of 13102012013 is 31021020131.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 31021020131 = 180117224331.

It can be written as a sum of positive squares in 2 ways, for example, as 8569760329 + 4532251684 = 92573^2 + 67322^2 .

It is a cyclic number.

It is not a de Polignac number, because 13102012013 - 22 = 13102012009 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13102012003) 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, 385353278 + ... + 385353311.

It is an arithmetic number, because the mean of its divisors is an integer number (3468179655).

Almost surely, 213102012013 is an apocalyptic number.

It is an amenable number.

13102012013 is a deficient number, since it is larger than the sum of its proper divisors (770706607).

13102012013 is an equidigital number, since it uses as much as digits as its factorization.

13102012013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 770706606.

The product of its (nonzero) digits is 36, while the sum is 14.

Adding to 13102012013 its reverse (31021020131), we get a palindrome (44123032144).

The spelling of 13102012013 in words is "thirteen billion, one hundred two million, twelve thousand, thirteen".

Divisors: 1 17 770706589 13102012013