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13030000021 = 47535230831
BaseRepresentation
bin11000010001010011…
…00000010110010101
31020122002020120202101
430020221200112111
5203141140000041
65552542042101
7640616113153
oct141051402625
936562216671
1013030000021
115587105965
122637879331
1312c86769ac
148b87383d3
15513dcab31
hex308a60595

13030000021 has 8 divisors (see below), whose sum is σ = 13558316544. Its totient is φ = 12512145360.

The previous prime is 13029999967. The next prime is 13030000069. The reversal of 13030000021 is 12000003031.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 13030000021 - 223 = 13021611413 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 13029999962 and 13030000007.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13030000091) 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 7 ways as a sum of consecutive naturals, for example, 2612925 + ... + 2617906.

It is an arithmetic number, because the mean of its divisors is an integer number (1694789568).

Almost surely, 213030000021 is an apocalyptic number.

It is an amenable number.

13030000021 is a deficient number, since it is larger than the sum of its proper divisors (528316523).

13030000021 is an equidigital number, since it uses as much as digits as its factorization.

13030000021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5230931.

The product of its (nonzero) digits is 18, while the sum is 10.

Adding to 13030000021 its reverse (12000003031), we get a palindrome (25030003052).

The spelling of 13030000021 in words is "thirteen billion, thirty million, twenty-one", and thus it is an aban number and an uban number.

Divisors: 1 47 53 2491 5230831 245849057 277234043 13030000021