Search a number
-
+
30103113231 = 324133380923
BaseRepresentation
bin11100000010010010…
…010000111000001111
32212200221022121010200
4130002102100320033
5443122344110411
621455034104543
72113661145342
oct340222207017
985627277120
1030103113231
1111848471584
125a0157b153
132ab9858949
14165800a459
15bb2be5e56
hex702490e0f

30103113231 has 12 divisors (see below), whose sum is σ = 43483864008. Its totient is φ = 20068008624.

The previous prime is 30103113191. The next prime is 30103113251. The reversal of 30103113231 is 13231130103.

It is a happy number.

30103113231 is a `hidden beast` number, since 30 + 1 + 0 + 311 + 323 + 1 = 666.

It is not a de Polignac number, because 30103113231 - 29 = 30103112719 is a prime.

It is a super-2 number, since 2×301031132312 (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30103113251) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 331536 + ... + 412458.

It is an arithmetic number, because the mean of its divisors is an integer number (3623655334).

Almost surely, 230103113231 is an apocalyptic number.

30103113231 is a deficient number, since it is larger than the sum of its proper divisors (13380750777).

30103113231 is a wasteful number, since it uses less digits than its factorization.

30103113231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 122262 (or 122259 counting only the distinct ones).

The product of its (nonzero) digits is 162, while the sum is 18.

Adding to 30103113231 its reverse (13231130103), we get a palindrome (43334243334).

The spelling of 30103113231 in words is "thirty billion, one hundred three million, one hundred thirteen thousand, two hundred thirty-one".

Divisors: 1 3 9 41333 80923 123999 242769 371997 728307 3344790359 10034371077 30103113231