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130818031 is a prime number
BaseRepresentation
bin1111100110000…
…01111111101111
3100010011020121021
413303001333233
5231442134111
620551515011
73145635451
oct763017757
9303136537
10130818031
1167930583
1237988a67
1321143c26
14135342d1
15b740d71
hex7cc1fef

130818031 has 2 divisors, whose sum is σ = 130818032. Its totient is φ = 130818030.

The previous prime is 130818029. The next prime is 130818071.

130818031 is nontrivially palindromic in base 10.

It is a weak prime.

It is a palprime.

It is a cyclic number.

It is not a de Polignac number, because 130818031 - 21 = 130818029 is a prime.

It is a super-2 number, since 2×1308180312 = 34226714469433922, which contains 22 as substring.

Together with 130818029, it forms a pair of twin primes.

It is a junction number, because it is equal to n+sod(n) for n = 130817987 and 130818005.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (130818011) 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 as a sum of consecutive naturals, namely, 65409015 + 65409016.

It is an arithmetic number, because the mean of its divisors is an integer number (65409016).

Almost surely, 2130818031 is an apocalyptic number.

130818031 is a deficient number, since it is larger than the sum of its proper divisors (1).

130818031 is an equidigital number, since it uses as much as digits as its factorization.

130818031 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 576, while the sum is 25.

The square root of 130818031 is about 11437.5710271019. The cubic root of 130818031 is about 507.6400396539.

It can be divided in two parts, 13081 and 8031, that added together give a palindrome (21112).

The spelling of 130818031 in words is "one hundred thirty million, eight hundred eighteen thousand, thirty-one".