Search a number
-
+
30120220310 = 2531587165523
BaseRepresentation
bin11100000011010011…
…100001011010010110
32212202010111201122012
4130003103201122112
5443141234022220
621500444504222
72114256435245
oct340323413226
985663451565
1030120220310
1111857096364
125a0724b072
132ac026838b
14165a3c095c
15bb4474ac5
hex7034e1696

30120220310 has 32 divisors (see below), whose sum is σ = 56060992512. Its totient is φ = 11639507040.

The previous prime is 30120220301. The next prime is 30120220327. The reversal of 30120220310 is 1302202103.

It is a happy number.

It is a super-2 number, since 2×301202203102 (a number of 22 digits) contains 22 as substring.

It is a congruent number.

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, 99209 + ... + 264731.

It is an arithmetic number, because the mean of its divisors is an integer number (1751906016).

Almost surely, 230120220310 is an apocalyptic number.

30120220310 is a deficient number, since it is larger than the sum of its proper divisors (25940772202).

30120220310 is a wasteful number, since it uses less digits than its factorization.

30120220310 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 166148.

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

Adding to 30120220310 its reverse (1302202103), we get a palindrome (31422422413).

The spelling of 30120220310 in words is "thirty billion, one hundred twenty million, two hundred twenty thousand, three hundred ten".

Divisors: 1 2 5 10 31 62 155 310 587 1174 2935 5870 18197 36394 90985 165523 181970 331046 827615 1655230 5131213 10262426 25656065 51312130 97162001 194324002 485810005 971620010 3012022031 6024044062 15060110155 30120220310