Search a number
-
+
30202231131 = 35124289017
BaseRepresentation
bin11100001000001100…
…010111100101011011
32212221211211022100000
4130020030113211123
5443323232344011
621512534344043
72116303504662
oct341014274533
985854738300
1030202231131
11118994102a6
125a2a7bb023
132b04250aa7
14166724bdd9
15bbb774356
hex70831795b

30202231131 has 12 divisors (see below), whose sum is σ = 45241202552. Its totient is φ = 20134820592.

The previous prime is 30202231099. The next prime is 30202231139. The reversal of 30202231131 is 13113220203.

30202231131 is a `hidden beast` number, since 302 + 0 + 2 + 231 + 131 = 666.

It is not a de Polignac number, because 30202231131 - 25 = 30202231099 is a prime.

It is a super-2 number, since 2×302022311312 (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (30202231139) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 62144266 + ... + 62144751.

Almost surely, 230202231131 is an apocalyptic number.

30202231131 is a deficient number, since it is larger than the sum of its proper divisors (15038971421).

30202231131 is an equidigital number, since it uses as much as digits as its factorization.

30202231131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 124289032 (or 124289020 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 18.

Adding to 30202231131 its reverse (13113220203), we get a palindrome (43315451334).

The spelling of 30202231131 in words is "thirty billion, two hundred two million, two hundred thirty-one thousand, one hundred thirty-one".

Divisors: 1 3 9 27 81 243 124289017 372867051 1118601153 3355803459 10067410377 30202231131