Search a number
-
+
30243431211 = 375924409549
BaseRepresentation
bin11100001010101001…
…100010001100101011
32220001201100111012220
4130022221202030223
5443414304244321
621521005405123
72120313631560
oct341251421453
986051314186
1030243431211
111190a6a0554
125a405697a3
132b0c947936
14166c8d4867
15bc01b19c6
hex70aa6232b

30243431211 has 16 divisors (see below), whose sum is σ = 46866336000. Its totient is φ = 16989045408.

The previous prime is 30243431209. The next prime is 30243431237. The reversal of 30243431211 is 11213434203.

It is a happy number.

It is not a de Polignac number, because 30243431211 - 21 = 30243431209 is a prime.

It is not an unprimeable number, because it can be changed into a prime (30243431411) 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, 12203536 + ... + 12206013.

It is an arithmetic number, because the mean of its divisors is an integer number (2929146000).

Almost surely, 230243431211 is an apocalyptic number.

30243431211 is a deficient number, since it is larger than the sum of its proper divisors (16622904789).

30243431211 is a wasteful number, since it uses less digits than its factorization.

30243431211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24409618.

The product of its (nonzero) digits is 1728, while the sum is 24.

Adding to 30243431211 its reverse (11213434203), we get a palindrome (41456865414).

The spelling of 30243431211 in words is "thirty billion, two hundred forty-three million, four hundred thirty-one thousand, two hundred eleven".

Divisors: 1 3 7 21 59 177 413 1239 24409549 73228647 170866843 512600529 1440163391 4320490173 10081143737 30243431211