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20131441211 = 721133635803
BaseRepresentation
bin10010101111111011…
…010110101000111011
31220221222212011200202
4102233323112220323
5312212122104321
613125342352415
71311606266300
oct225773265073
956858764622
1020131441211
1185a0745822
123a99b8b70b
131b8a9a93bb
14d8d93d0a7
157cc58170b
hex4afed6a3b

20131441211 has 12 divisors (see below), whose sum is σ = 23625454392. Its totient is φ = 17102812608.

The previous prime is 20131441177. The next prime is 20131441217. The reversal of 20131441211 is 11214413102.

It is not a de Polignac number, because 20131441211 - 210 = 20131440187 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20131441217) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1812365 + ... + 1823438.

It is an arithmetic number, because the mean of its divisors is an integer number (1968787866).

Almost surely, 220131441211 is an apocalyptic number.

20131441211 is a deficient number, since it is larger than the sum of its proper divisors (3494013181).

20131441211 is a wasteful number, since it uses less digits than its factorization.

20131441211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3635930 (or 3635923 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 20.

Adding to 20131441211 its reverse (11214413102), we get a palindrome (31345854313).

The spelling of 20131441211 in words is "twenty billion, one hundred thirty-one million, four hundred forty-one thousand, two hundred eleven".

Divisors: 1 7 49 113 791 5537 3635803 25450621 178154347 410845739 2875920173 20131441211