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30121103233 = 133859360037
BaseRepresentation
bin11100000011010110…
…111000111110000001
32212202012011120210001
4130003112320332001
5443142000300413
621500515440001
72114300103334
oct340326707601
985665146701
1030121103233
1111857639751
125a075b6001
132ac04b7210
14165a57061b
15bb459b4dd
hex7035b8f81

30121103233 has 8 divisors (see below), whose sum is σ = 32439492008. Its totient is φ = 27802911744.

The previous prime is 30121103231. The next prime is 30121103249. The reversal of 30121103233 is 33230112103.

It can be written as a sum of positive squares in 4 ways, for example, as 6085872144 + 24035231089 = 78012^2 + 155033^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 30121103233 - 21 = 30121103231 is a prime.

It is a super-3 number, since 3×301211032333 (a number of 32 digits) contains 333 as substring.

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 30121103233.

It is not an unprimeable number, because it can be changed into a prime (30121103231) 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 7 ways as a sum of consecutive naturals, for example, 471691 + ... + 531727.

It is an arithmetic number, because the mean of its divisors is an integer number (4054936501).

Almost surely, 230121103233 is an apocalyptic number.

It is an amenable number.

30121103233 is a deficient number, since it is larger than the sum of its proper divisors (2318388775).

30121103233 is a wasteful number, since it uses less digits than its factorization.

30121103233 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 98643.

The product of its (nonzero) digits is 324, while the sum is 19.

Adding to 30121103233 its reverse (33230112103), we get a palindrome (63351215336).

The spelling of 30121103233 in words is "thirty billion, one hundred twenty-one million, one hundred three thousand, two hundred thirty-three".

Divisors: 1 13 38593 60037 501709 780481 2317007941 30121103233