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30313111131 = 323368123459
BaseRepresentation
bin11100001110110011…
…010101111001011011
32220020120110121002200
4130032303111321123
5444040124024011
621531535101243
72122121123202
oct341663257133
986216417080
1030313111131
1111945a63066
125a5b971823
132b21203864
141677c72239
15bc6377856
hex70ecd5e5b

30313111131 has 6 divisors (see below), whose sum is σ = 43785604980. Its totient is φ = 20208740748.

The previous prime is 30313111123. The next prime is 30313111159. The reversal of 30313111131 is 13111131303.

It is not a de Polignac number, because 30313111131 - 23 = 30313111123 is a prime.

It is a super-2 number, since 2×303131111312 (a number of 22 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (30313111121) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1684061721 + ... + 1684061738.

It is an arithmetic number, because the mean of its divisors is an integer number (7297600830).

Almost surely, 230313111131 is an apocalyptic number.

30313111131 is a deficient number, since it is larger than the sum of its proper divisors (13472493849).

30313111131 is a wasteful number, since it uses less digits than its factorization.

30313111131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3368123465 (or 3368123462 counting only the distinct ones).

The product of its (nonzero) digits is 81, while the sum is 18.

Adding to 30313111131 its reverse (13111131303), we get a palindrome (43424242434).

The spelling of 30313111131 in words is "thirty billion, three hundred thirteen million, one hundred eleven thousand, one hundred thirty-one".

Divisors: 1 3 9 3368123459 10104370377 30313111131