Search a number
-
+
30312010210 = 254370493047
BaseRepresentation
bin11100001110101111…
…001001000111100010
32220020111101122220211
4130032233021013202
5444034333311320
621531455324334
72122105556416
oct341657110742
986214348824
1030312010210
1111945380a09
125a5b5206aa
132b20c09721
141677a66d46
15bc620b55a
hex70ebc91e2

30312010210 has 16 divisors (see below), whose sum is σ = 55830494016. Its totient is φ = 11842831728.

The previous prime is 30312010207. The next prime is 30312010217. The reversal of 30312010210 is 1201021303.

It is a super-2 number, since 2×303120102102 (a number of 22 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (30312010217) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 35246094 + ... + 35246953.

It is an arithmetic number, because the mean of its divisors is an integer number (3489405876).

Almost surely, 230312010210 is an apocalyptic number.

30312010210 is a deficient number, since it is larger than the sum of its proper divisors (25518483806).

30312010210 is a wasteful number, since it uses less digits than its factorization.

30312010210 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 70493097.

The product of its (nonzero) digits is 36, while the sum is 13.

Adding to 30312010210 its reverse (1201021303), we get a palindrome (31513031513).

The spelling of 30312010210 in words is "thirty billion, three hundred twelve million, ten thousand, two hundred ten".

Divisors: 1 2 5 10 43 86 215 430 70493047 140986094 352465235 704930470 3031201021 6062402042 15156005105 30312010210