Search a number
-
+
30212012233 = 1319451327103
BaseRepresentation
bin11100001000110001…
…101011100011001001
32212222112020020111001
4130020301223203021
5443333233342413
621513524135001
72116452603214
oct341061534311
985875206431
1030212012233
11118a3990a57
125a31b37461
132b06296b20
14166867677b
15bbc5574dd
hex708c6b8c9

30212012233 has 16 divisors (see below), whose sum is σ = 34257287680. Its totient is φ = 26413392384.

The previous prime is 30212012219. The next prime is 30212012249. The reversal of 30212012233 is 33221021203.

It is a cyclic number.

It is not a de Polignac number, because 30212012233 - 225 = 30178457801 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (19).

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 30212012233.

It is not an unprimeable number, because it can be changed into a prime (30212012263) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1101160 + ... + 1128262.

It is an arithmetic number, because the mean of its divisors is an integer number (2141080480).

Almost surely, 230212012233 is an apocalyptic number.

It is an amenable number.

30212012233 is a deficient number, since it is larger than the sum of its proper divisors (4045275447).

30212012233 is a wasteful number, since it uses less digits than its factorization.

30212012233 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31648.

The product of its (nonzero) digits is 432, while the sum is 19.

Adding to 30212012233 its reverse (33221021203), we get a palindrome (63433033436).

The spelling of 30212012233 in words is "thirty billion, two hundred twelve million, twelve thousand, two hundred thirty-three".

Divisors: 1 13 19 247 4513 27103 58669 85747 352339 514957 1114711 6694441 122315839 1590105907 2324000941 30212012233