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30023120201 = 191157189111
BaseRepresentation
bin11011111101100001…
…000111010101001001
32212111100210112022212
4123331201013111021
5442441404321301
621443055354505
72112000211454
oct337541072511
985440715285
1030023120201
11118072a5638
12599a822a35
132aa60cb7a9
14164b54649b
15baab944bb
hex6fd847549

30023120201 has 4 divisors (see below), whose sum is σ = 30180309504. Its totient is φ = 29865930900.

The previous prime is 30023120129. The next prime is 30023120233. The reversal of 30023120201 is 10202132003.

It is a happy number.

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: 10202132003 = 71457447429.

It is a cyclic number.

It is not a de Polignac number, because 30023120201 - 210 = 30023119177 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (30023620201) 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, 78594365 + ... + 78594746.

It is an arithmetic number, because the mean of its divisors is an integer number (7545077376).

Almost surely, 230023120201 is an apocalyptic number.

It is an amenable number.

30023120201 is a deficient number, since it is larger than the sum of its proper divisors (157189303).

30023120201 is a wasteful number, since it uses less digits than its factorization.

30023120201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 157189302.

The product of its (nonzero) digits is 72, while the sum is 14.

Adding to 30023120201 its reverse (10202132003), we get a palindrome (40225252204).

The spelling of 30023120201 in words is "thirty billion, twenty-three million, one hundred twenty thousand, two hundred one".

Divisors: 1 191 157189111 30023120201