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13020232213 = 35413676993
BaseRepresentation
bin11000010000001000…
…01111101000010101
31020121101212022211201
430020010033220111
5203131134412323
65551552432501
7640440101452
oct141004175025
936541768751
1013020232213
11558164419a
122634548731
1312c6636a21
148b7314829
155130eb8ad
hex30810fa15

13020232213 has 4 divisors (see below), whose sum is σ = 13023912748. Its totient is φ = 13016551680.

The previous prime is 13020232189. The next prime is 13020232217. The reversal of 13020232213 is 31223202031.

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

It can be written as a sum of positive squares in 2 ways, for example, as 10000400004 + 3019832209 = 100002^2 + 54953^2 .

It is a cyclic number.

It is not a de Polignac number, because 13020232213 - 229 = 12483361301 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 (13020232217) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1834956 + ... + 1842037.

It is an arithmetic number, because the mean of its divisors is an integer number (3255978187).

Almost surely, 213020232213 is an apocalyptic number.

It is an amenable number.

13020232213 is a deficient number, since it is larger than the sum of its proper divisors (3680535).

13020232213 is an equidigital number, since it uses as much as digits as its factorization.

13020232213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3680534.

The product of its (nonzero) digits is 432, while the sum is 19.

Adding to 13020232213 its reverse (31223202031), we get a palindrome (44243434244).

The spelling of 13020232213 in words is "thirteen billion, twenty million, two hundred thirty-two thousand, two hundred thirteen".

Divisors: 1 3541 3676993 13020232213