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30300310031 = 1051227431
BaseRepresentation
bin11100001110000010…
…100000101000001111
32220012200101020021212
4130032002200220033
5444023334410111
621530400445035
72121604246205
oct341602405017
986180336255
1030300310031
111193980a442
125a5761977b
132b1b671044
14167629d075
15bc519998b
hex70e0a0a0f

30300310031 has 6 divisors (see below), whose sum is σ = 30330273096. Its totient is φ = 30270376500.

The previous prime is 30300309971. The next prime is 30300310069. The reversal of 30300310031 is 13001300303.

It is not a de Polignac number, because 30300310031 - 26 = 30300309967 is a prime.

It is a super-2 number, since 2×303003100312 (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 30300309988 and 30300310015.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30300310231) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1090886 + ... + 1118316.

It is an arithmetic number, because the mean of its divisors is an integer number (5055045516).

Almost surely, 230300310031 is an apocalyptic number.

30300310031 is a deficient number, since it is larger than the sum of its proper divisors (29963065).

30300310031 is an frugal number, since it uses more digits than its factorization.

30300310031 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29533 (or 28482 counting only the distinct ones).

The product of its (nonzero) digits is 81, while the sum is 14.

Adding to 30300310031 its reverse (13001300303), we get a palindrome (43301610334).

The spelling of 30300310031 in words is "thirty billion, three hundred million, three hundred ten thousand, thirty-one".

Divisors: 1 1051 27431 1104601 28829981 30300310031