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20413102013 = 103119799323
BaseRepresentation
bin10011000000101101…
…110011011110111101
31221200121212000200022
4103000231303132331
5313301223231023
613213323341525
71321566334643
oct230055633675
957617760608
1020413102013
118725733747
123b583818a5
131c041559b5
14db90db193
157e716b7c8
hex4c0b737bd

20413102013 has 4 divisors (see below), whose sum is σ = 20432902368. Its totient is φ = 20393301660.

The previous prime is 20413101977. The next prime is 20413102027. The reversal of 20413102013 is 31020131402.

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.

It is a cyclic number.

It is not a de Polignac number, because 20413102013 - 28 = 20413101757 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 20413101982 and 20413102000.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20413102043) 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, 9898631 + ... + 9900692.

It is an arithmetic number, because the mean of its divisors is an integer number (5108225592).

Almost surely, 220413102013 is an apocalyptic number.

It is an amenable number.

20413102013 is a deficient number, since it is larger than the sum of its proper divisors (19800355).

20413102013 is a wasteful number, since it uses less digits than its factorization.

20413102013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19800354.

The product of its (nonzero) digits is 144, while the sum is 17.

Adding to 20413102013 its reverse (31020131402), we get a palindrome (51433233415).

The spelling of 20413102013 in words is "twenty billion, four hundred thirteen million, one hundred two thousand, thirteen".

Divisors: 1 1031 19799323 20413102013