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30031330121 = 132638783659
BaseRepresentation
bin11011111110000000…
…011011101101001001
32212111221020122012222
4123332000123231021
5443001010030441
621443551343425
72112130044212
oct337600335511
985457218188
1030031330121
11118109a28a1
1259a1521b75
132aa7a14630
14164c682409
15bab766d4b
hex6fe01bb49

30031330121 has 8 divisors (see below), whose sum is σ = 32464407360. Its totient is φ = 27615820752.

The previous prime is 30031330111. The next prime is 30031330123. The reversal of 30031330121 is 12103313003.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 30031330121 - 218 = 30031067977 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 30031330121.

It is not an unprimeable number, because it can be changed into a prime (30031330123) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4388411 + ... + 4395248.

It is an arithmetic number, because the mean of its divisors is an integer number (4058050920).

Almost surely, 230031330121 is an apocalyptic number.

It is an amenable number.

30031330121 is a deficient number, since it is larger than the sum of its proper divisors (2433077239).

30031330121 is a wasteful number, since it uses less digits than its factorization.

30031330121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8783935.

The product of its (nonzero) digits is 162, while the sum is 17.

Adding to 30031330121 its reverse (12103313003), we get a palindrome (42134643124).

The spelling of 30031330121 in words is "thirty billion, thirty-one million, three hundred thirty thousand, one hundred twenty-one".

Divisors: 1 13 263 3419 8783659 114187567 2310102317 30031330121