Search a number
-
+
30231310213 = 134160955889
BaseRepresentation
bin11100001001111011…
…010010111110000101
32220000212112200100001
4130021323102332011
5443403203411323
621515453521301
72120105616436
oct341173227605
986025480301
1030231310213
11119038718a5
125a384a3231
132b0a292850
14166b05b48d
15bbe0ba3ad
hex709ed2f85

30231310213 has 8 divisors (see below), whose sum is σ = 32558160600. Its totient is φ = 27904654848.

The previous prime is 30231310211. The next prime is 30231310253. The reversal of 30231310213 is 31201313203.

It can be written as a sum of positive squares in 4 ways, for example, as 12981639969 + 17249670244 = 113937^2 + 131338^2 .

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 30231310213 - 21 = 30231310211 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30231310211) 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 7 ways as a sum of consecutive naturals, for example, 512973 + ... + 568861.

It is an arithmetic number, because the mean of its divisors is an integer number (4069770075).

Almost surely, 230231310213 is an apocalyptic number.

It is an amenable number.

30231310213 is a deficient number, since it is larger than the sum of its proper divisors (2326850387).

30231310213 is a wasteful number, since it uses less digits than its factorization.

30231310213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 97511.

The product of its (nonzero) digits is 324, while the sum is 19.

Adding to 30231310213 its reverse (31201313203), we get a palindrome (61432623416).

The spelling of 30231310213 in words is "thirty billion, two hundred thirty-one million, three hundred ten thousand, two hundred thirteen".

Divisors: 1 13 41609 55889 540917 726557 2325485401 30231310213