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130783901 = 162180681
BaseRepresentation
bin1111100101110…
…01101010011101
3100010002111210012
413302321222131
5231440041101
620551053005
73145434113
oct762715235
9303074705
10130783901
1167907976
1237971165
1321131531
1413525ab3
15b735bbb
hex7cb9a9d

130783901 has 4 divisors (see below), whose sum is σ = 130866204. Its totient is φ = 130701600.

The previous prime is 130783889. The next prime is 130783909. The reversal of 130783901 is 109387031.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 109387031 = 138414387.

It can be written as a sum of positive squares in 2 ways, for example, as 121572676 + 9211225 = 11026^2 + 3035^2 .

It is a cyclic number.

It is not a de Polignac number, because 130783901 - 26 = 130783837 is a prime.

It is a super-3 number, since 3×1307839013 (a number of 25 digits) contains 333 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (130783909) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 38720 + ... + 41961.

It is an arithmetic number, because the mean of its divisors is an integer number (32716551).

Almost surely, 2130783901 is an apocalyptic number.

It is an amenable number.

130783901 is a deficient number, since it is larger than the sum of its proper divisors (82303).

130783901 is an equidigital number, since it uses as much as digits as its factorization.

130783901 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 82302.

The product of its (nonzero) digits is 4536, while the sum is 32.

The square root of 130783901 is about 11436.0789171814. The cubic root of 130783901 is about 507.5958886008.

The spelling of 130783901 in words is "one hundred thirty million, seven hundred eighty-three thousand, nine hundred one".

Divisors: 1 1621 80681 130783901