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30102121303 = 149320162171
BaseRepresentation
bin11100000010001110…
…011110101101010111
32212200212110012110121
4130002032132231113
5443122120340203
621455000532411
72113646544412
oct340216365527
985625405417
1030102121303
1111847954301
125a01181107
132ab959c2c7
141657c2cb79
15bb2a9c0bd
hex70239eb57

30102121303 has 4 divisors (see below), whose sum is σ = 30122284968. Its totient is φ = 30081957640.

The previous prime is 30102121297. The next prime is 30102121337. The reversal of 30102121303 is 30312120103.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 30312120103 = 242312510161.

It is a cyclic number.

It is not a de Polignac number, because 30102121303 - 229 = 29565250391 is a prime.

It is a super-2 number, since 2×301021213032 (a number of 22 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 (30102121703) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10079593 + ... + 10082578.

It is an arithmetic number, because the mean of its divisors is an integer number (7530571242).

Almost surely, 230102121303 is an apocalyptic number.

30102121303 is a deficient number, since it is larger than the sum of its proper divisors (20163665).

30102121303 is a wasteful number, since it uses less digits than its factorization.

30102121303 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20163664.

The product of its (nonzero) digits is 108, while the sum is 16.

Adding to 30102121303 its reverse (30312120103), we get a palindrome (60414241406).

The spelling of 30102121303 in words is "thirty billion, one hundred two million, one hundred twenty-one thousand, three hundred three".

Divisors: 1 1493 20162171 30102121303