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30142033031 = 112251992461
BaseRepresentation
bin11100000100100110…
…101110110010000111
32212210122112221001202
4130010212232302013
5443212330024111
621502544213115
72114643024215
oct340446566207
985718487052
1030142033031
1111868434600
125a1260a19b
132ac4934906
14165d25bcb5
15bb6332b3b
hex7049aec87

30142033031 has 12 divisors (see below), whose sum is σ = 33263356392. Its totient is φ = 27292650000.

The previous prime is 30142033003. The next prime is 30142033037. The reversal of 30142033031 is 13033024103.

It is not a de Polignac number, because 30142033031 - 214 = 30142016647 is a prime.

It is a super-2 number, since 2×301420330312 (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 30142032994 and 30142033012.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30142033037) 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 11 ways as a sum of consecutive naturals, for example, 465860 + ... + 526601.

It is an arithmetic number, because the mean of its divisors is an integer number (2771946366).

Almost surely, 230142033031 is an apocalyptic number.

30142033031 is a deficient number, since it is larger than the sum of its proper divisors (3121323361).

30142033031 is a wasteful number, since it uses less digits than its factorization.

30142033031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 992734 (or 992723 counting only the distinct ones).

The product of its (nonzero) digits is 648, while the sum is 20.

Adding to 30142033031 its reverse (13033024103), we get a palindrome (43175057134).

The spelling of 30142033031 in words is "thirty billion, one hundred forty-two million, thirty-three thousand, thirty-one".

Divisors: 1 11 121 251 2761 30371 992461 10917071 120087781 249107711 2740184821 30142033031