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13030121303 = 20696297787
BaseRepresentation
bin11000010001010011…
…11101111101010111
31020122002110202010022
430020221331331113
5203141202340203
65552544415355
7640620126563
oct141051757527
936562422108
1013030121303
115587188aa1
12263791755b
1312c86b9c64
148b876a6a3
15513e01a38
hex308a7df57

13030121303 has 4 divisors (see below), whose sum is σ = 13036421160. Its totient is φ = 13023821448.

The previous prime is 13030121261. The next prime is 13030121309. The reversal of 13030121303 is 30312103031.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 30312103031 = 74330300433.

It is a cyclic number.

It is not a de Polignac number, because 13030121303 - 216 = 13030055767 is a prime.

It is a super-2 number, since 2×130301213032 (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13030121309) 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, 3146825 + ... + 3150962.

It is an arithmetic number, because the mean of its divisors is an integer number (3259105290).

Almost surely, 213030121303 is an apocalyptic number.

13030121303 is a deficient number, since it is larger than the sum of its proper divisors (6299857).

13030121303 is an equidigital number, since it uses as much as digits as its factorization.

13030121303 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6299856.

The product of its (nonzero) digits is 162, while the sum is 17.

Adding to 13030121303 its reverse (30312103031), we get a palindrome (43342224334).

The spelling of 13030121303 in words is "thirteen billion, thirty million, one hundred twenty-one thousand, three hundred three".

Divisors: 1 2069 6297787 13030121303