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20303030131 = 46350387179
BaseRepresentation
bin10010111010001001…
…111010011101110011
31221101221201210102221
4102322021322131303
5313040033431011
613154352221511
71316061623446
oct227211723563
957357653387
1020303030131
11867959304a
123b2753a897
131bb73c69c7
14da864765d
157dc677971
hex4ba27a773

20303030131 has 8 divisors (see below), whose sum is σ = 20387566080. Its totient is φ = 20218670472.

The previous prime is 20303030107. The next prime is 20303030149. The reversal of 20303030131 is 13103030302.

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 20303030131 - 27 = 20303030003 is a prime.

It is a super-2 number, since 2×203030301312 (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20303030101) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 189300 + ... + 276478.

It is an arithmetic number, because the mean of its divisors is an integer number (2548445760).

Almost surely, 220303030131 is an apocalyptic number.

20303030131 is a deficient number, since it is larger than the sum of its proper divisors (84535949).

20303030131 is an equidigital number, since it uses as much as digits as its factorization.

20303030131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 88145.

The product of its (nonzero) digits is 162, while the sum is 16.

Adding to 20303030131 its reverse (13103030302), we get a palindrome (33406060433).

The spelling of 20303030131 in words is "twenty billion, three hundred three million, thirty thousand, one hundred thirty-one".

Divisors: 1 463 503 87179 232889 40363877 43851037 20303030131