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13020404213 = 23566104531
BaseRepresentation
bin11000010000001001…
…11001100111110101
31020121102012001210002
430020010321213311
5203131210413323
65552000241045
7640441416065
oct141004714765
936542161702
1013020404213
115581751443
122634610185
1312c66970bb
148b735b3a5
15513132828
hex3081399f5

13020404213 has 4 divisors (see below), whose sum is σ = 13586508768. Its totient is φ = 12454299660.

The previous prime is 13020404207. The next prime is 13020404231. The reversal of 13020404213 is 31240402031.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 31240402031 = 199931562567.

It is a cyclic number.

It is not a de Polignac number, because 13020404213 - 210 = 13020403189 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 (13020404273) 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, 283052243 + ... + 283052288.

It is an arithmetic number, because the mean of its divisors is an integer number (3396627192).

Almost surely, 213020404213 is an apocalyptic number.

It is an amenable number.

13020404213 is a deficient number, since it is larger than the sum of its proper divisors (566104555).

13020404213 is an equidigital number, since it uses as much as digits as its factorization.

13020404213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 566104554.

The product of its (nonzero) digits is 576, while the sum is 20.

Adding to 13020404213 its reverse (31240402031), we get a palindrome (44260806244).

The spelling of 13020404213 in words is "thirteen billion, twenty million, four hundred four thousand, two hundred thirteen".

Divisors: 1 23 566104531 13020404213