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30211311043 = 66145705463
BaseRepresentation
bin11100001000101111…
…000000010111000011
32212222110220121122001
4130020233000113003
5443333043423133
621513501124431
72116443623014
oct341057002703
985873817561
1030211311043
11118a3552161
125a31859717
132b060ac914
14166853300b
15bbc46987d
hex708bc05c3

30211311043 has 4 divisors (see below), whose sum is σ = 30257017168. Its totient is φ = 30165604920.

The previous prime is 30211311041. The next prime is 30211311079. The reversal of 30211311043 is 34011311203.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 34011311203 = 231478752661.

It is a cyclic number.

It is not a de Polignac number, because 30211311043 - 21 = 30211311041 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 30211311043.

It is not an unprimeable number, because it can be changed into a prime (30211311041) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 22852071 + ... + 22853392.

It is an arithmetic number, because the mean of its divisors is an integer number (7564254292).

Almost surely, 230211311043 is an apocalyptic number.

30211311043 is a deficient number, since it is larger than the sum of its proper divisors (45706125).

30211311043 is an equidigital number, since it uses as much as digits as its factorization.

30211311043 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 45706124.

The product of its (nonzero) digits is 216, while the sum is 19.

Adding to 30211311043 its reverse (34011311203), we get a palindrome (64222622246).

The spelling of 30211311043 in words is "thirty billion, two hundred eleven million, three hundred eleven thousand, forty-three".

Divisors: 1 661 45705463 30211311043