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130157317 = 379343423
BaseRepresentation
bin1111100001000…
…00101100000101
3100001220200021101
413300200230011
5231310013232
620525420101
73140214253
oct760405405
9301820241
10130157317
116751a134
123770a631
1320c72284
14134015d3
15b6601e7
hex7c20b05

130157317 has 4 divisors (see below), whose sum is σ = 130501120. Its totient is φ = 129813516.

The previous prime is 130157243. The next prime is 130157327. The reversal of 130157317 is 713751031.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 130157317 - 211 = 130155269 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (130157327) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 171333 + ... + 172090.

It is an arithmetic number, because the mean of its divisors is an integer number (32625280).

Almost surely, 2130157317 is an apocalyptic number.

It is an amenable number.

130157317 is a deficient number, since it is larger than the sum of its proper divisors (343803).

130157317 is an equidigital number, since it uses as much as digits as its factorization.

130157317 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 343802.

The product of its (nonzero) digits is 2205, while the sum is 28.

The square root of 130157317 is about 11408.6509719598. The cubic root of 130157317 is about 506.7839620998.

It can be divided in two parts, 130 and 157317, that multiplied together give a triangular number (20451210 = T6395).

The spelling of 130157317 in words is "one hundred thirty million, one hundred fifty-seven thousand, three hundred seventeen".

Divisors: 1 379 343423 130157317