Search a number
-
+
30231002120 = 23511179383837
BaseRepresentation
bin11100001001111010…
…000111110000001000
32220000211222000201012
4130021322013300020
5443403114031440
621515443143052
72120103164264
oct341172076010
986024860635
1030231002120
1111903681380
125a38374a88
132b0a1b5547
14166adbb0a4
15bbe058e65
hex709e87c08

30231002120 has 64 divisors (see below), whose sum is σ = 74618107200. Its totient is φ = 10931649280.

The previous prime is 30231002101. The next prime is 30231002147. The reversal of 30231002120 is 2120013203.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 30231002095 and 30231002104.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 113159 + ... + 270678.

It is an arithmetic number, because the mean of its divisors is an integer number (1165907925).

Almost surely, 230231002120 is an apocalyptic number.

It is an amenable number.

30231002120 is an abundant number, since it is smaller than the sum of its proper divisors (44387105080).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

30231002120 is a wasteful number, since it uses less digits than its factorization.

30231002120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 384038 (or 384034 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 14.

Adding to 30231002120 its reverse (2120013203), we get a palindrome (32351015323).

The spelling of 30231002120 in words is "thirty billion, two hundred thirty-one million, two thousand, one hundred twenty".

Divisors: 1 2 4 5 8 10 11 20 22 40 44 55 88 110 179 220 358 440 716 895 1432 1790 1969 3580 3938 7160 7876 9845 15752 19690 39380 78760 383837 767674 1535348 1919185 3070696 3838370 4222207 7676740 8444414 15353480 16888828 21111035 33777656 42222070 68706823 84444140 137413646 168888280 274827292 343534115 549654584 687068230 755775053 1374136460 1511550106 2748272920 3023100212 3778875265 6046200424 7557750530 15115501060 30231002120