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130203131 = 3110693929
BaseRepresentation
bin1111100001010…
…11110111111011
3100002000000010012
413300223313323
5231313000011
620530412135
73140464652
oct760536773
9302000105
10130203131
11675505a3
123773104b
1320c8a096
1413414199
15b66da8b
hex7c2bdfb

130203131 has 8 divisors (see below), whose sum is σ = 134563200. Its totient is φ = 125853120.

The previous prime is 130203121. The next prime is 130203133. The reversal of 130203131 is 131302031.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2k-130203131 is a prime.

It is a super-2 number, since 2×1302031312 = 33905710644406322, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (130203133) 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 7 ways as a sum of consecutive naturals, for example, 31175 + ... + 35103.

It is an arithmetic number, because the mean of its divisors is an integer number (16820400).

Almost surely, 2130203131 is an apocalyptic number.

130203131 is a deficient number, since it is larger than the sum of its proper divisors (4360069).

130203131 is a wasteful number, since it uses less digits than its factorization.

130203131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5029.

The product of its (nonzero) digits is 54, while the sum is 14.

The square root of 130203131 is about 11410.6586575885. The cubic root of 130203131 is about 506.8434159909.

Adding to 130203131 its reverse (131302031), we get a palindrome (261505162).

The spelling of 130203131 in words is "one hundred thirty million, two hundred three thousand, one hundred thirty-one".

Divisors: 1 31 1069 3929 33139 121799 4200101 130203131