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130262531 = 725934483
BaseRepresentation
bin1111100001110…
…10011000000011
3100002010000121012
413300322120003
5231321400111
620531551135
73141133100
oct760723003
9302100535
10130262531
1167591193
123775b4ab
1320cab129
141342baa7
15b68148b
hex7c3a603

130262531 has 12 divisors (see below), whose sum is σ = 151819272. Its totient is φ = 111440448.

The previous prime is 130262497. The next prime is 130262557. The reversal of 130262531 is 135262031.

It is not a de Polignac number, because 130262531 - 210 = 130261507 is a prime.

It is a super-2 number, since 2×1302625312 = 33936653965051922, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 130262497 and 130262506.

It is not an unprimeable number, because it can be changed into a prime (130262581) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 26816 + ... + 31298.

It is an arithmetic number, because the mean of its divisors is an integer number (12651606).

Almost surely, 2130262531 is an apocalyptic number.

130262531 is a deficient number, since it is larger than the sum of its proper divisors (21556741).

130262531 is an equidigital number, since it uses as much as digits as its factorization.

130262531 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5090 (or 5083 counting only the distinct ones).

The product of its (nonzero) digits is 1080, while the sum is 23.

The square root of 130262531 is about 11413.2611903873. The cubic root of 130262531 is about 506.9204799896.

The spelling of 130262531 in words is "one hundred thirty million, two hundred sixty-two thousand, five hundred thirty-one".

Divisors: 1 7 49 593 4151 4483 29057 31381 219667 2658419 18608933 130262531