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130343131 = 177667243
BaseRepresentation
bin1111100010011…
…10000011011011
3100002021010011101
413301032003123
5231331440011
620533412231
73141620062
oct761160333
9302233141
10130343131
11676367a6
123779a077
1321008a19
141344d1d9
15b69a2c1
hex7c4e0db

130343131 has 4 divisors (see below), whose sum is σ = 138010392. Its totient is φ = 122675872.

The previous prime is 130343123. The next prime is 130343167. The reversal of 130343131 is 131343031.

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

It is a cyclic number.

It is not a de Polignac number, because 130343131 - 23 = 130343123 is a prime.

It is a super-2 number, since 2×1303431312 = 33978663597766322, 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 = 130343099 and 130343108.

It is not an unprimeable number, because it can be changed into a prime (130343111) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3833605 + ... + 3833638.

It is an arithmetic number, because the mean of its divisors is an integer number (34502598).

Almost surely, 2130343131 is an apocalyptic number.

130343131 is a deficient number, since it is larger than the sum of its proper divisors (7667261).

130343131 is an equidigital number, since it uses as much as digits as its factorization.

130343131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7667260.

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

The square root of 130343131 is about 11416.7916246203. The cubic root of 130343131 is about 507.0250108585.

Adding to 130343131 its reverse (131343031), we get a palindrome (261686162).

The spelling of 130343131 in words is "one hundred thirty million, three hundred forty-three thousand, one hundred thirty-one".

Divisors: 1 17 7667243 130343131