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30232103131 = 42737075147
BaseRepresentation
bin11100001001111110…
…010100100011011011
32220000221000222000101
4130021332110203123
5443403404300011
621515522520231
72120115431236
oct341176244333
986027028011
1030232103131
11119042635aa
125a38806077
132b0a4ac729
14166b1c641d
15bbe1c52c1
hex709f948db

30232103131 has 4 divisors (see below), whose sum is σ = 30239182552. Its totient is φ = 30225023712.

The previous prime is 30232103113. The next prime is 30232103147. The reversal of 30232103131 is 13130123203.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2k-30232103131 is a prime.

It is a super-2 number, since 2×302321031312 (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 = 30232103099 and 30232103108.

It is not an unprimeable number, because it can be changed into a prime (30232103101) 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, 3533301 + ... + 3541846.

It is an arithmetic number, because the mean of its divisors is an integer number (7559795638).

Almost surely, 230232103131 is an apocalyptic number.

30232103131 is a deficient number, since it is larger than the sum of its proper divisors (7079421).

30232103131 is an equidigital number, since it uses as much as digits as its factorization.

30232103131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7079420.

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

Adding to 30232103131 its reverse (13130123203), we get a palindrome (43362226334).

The spelling of 30232103131 in words is "thirty billion, two hundred thirty-two million, one hundred three thousand, one hundred thirty-one".

Divisors: 1 4273 7075147 30232103131