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30023231033 = 231305357871
BaseRepresentation
bin11011111101100001…
…100010011000111001
32212111101000011100202
4123331201202120321
5442441421343113
621443102011545
72112001152545
oct337541423071
985441004322
1030023231033
1111807370934
12599a876bb5
132aa613a083
14164b574a25
15baabb7258
hex6fd862639

30023231033 has 4 divisors (see below), whose sum is σ = 31328588928. Its totient is φ = 28717873140.

The previous prime is 30023231011. The next prime is 30023231059. The reversal of 30023231033 is 33013232003.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 33013232003 = 233141687691.

It is not a de Polignac number, because 30023231033 - 234 = 12843361849 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 30023230996 and 30023231014.

It is not an unprimeable number, because it can be changed into a prime (30023231533) 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 3 ways as a sum of consecutive naturals, for example, 652678913 + ... + 652678958.

It is an arithmetic number, because the mean of its divisors is an integer number (7832147232).

Almost surely, 230023231033 is an apocalyptic number.

It is an amenable number.

30023231033 is a deficient number, since it is larger than the sum of its proper divisors (1305357895).

30023231033 is a wasteful number, since it uses less digits than its factorization.

30023231033 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1305357894.

The product of its (nonzero) digits is 972, while the sum is 20.

Adding to 30023231033 its reverse (33013232003), we get a palindrome (63036463036).

The spelling of 30023231033 in words is "thirty billion, twenty-three million, two hundred thirty-one thousand, thirty-three".

Divisors: 1 23 1305357871 30023231033