Search a number
-
+
130351121 = 177667713
BaseRepresentation
bin1111100010100…
…00000000010001
3100002021112010022
413301100000101
5231332213441
620533513225
73141652265
oct761200021
9302245108
10130351121
11676417aa
12377a2815
132100c554
14134520a5
15b69c84b
hex7c50011

130351121 has 4 divisors (see below), whose sum is σ = 138018852. Its totient is φ = 122683392.

The previous prime is 130351079. The next prime is 130351159. The reversal of 130351121 is 121153031.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 121153031 = 147182361.

It can be written as a sum of positive squares in 2 ways, for example, as 45711121 + 84640000 = 6761^2 + 9200^2 .

It is a cyclic number.

It is not a de Polignac number, because 130351121 - 26 = 130351057 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (17), and also a Moran number because the ratio is a prime number: 7667713 = 130351121 / (1 + 3 + 0 + 3 + 5 + 1 + 1 + 2 + 1).

It is a self number, because there is not a number n which added to its sum of digits gives 130351121.

It is not an unprimeable number, because it can be changed into a prime (130351181) 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, 3833840 + ... + 3833873.

It is an arithmetic number, because the mean of its divisors is an integer number (34504713).

Almost surely, 2130351121 is an apocalyptic number.

It is an amenable number.

130351121 is a deficient number, since it is larger than the sum of its proper divisors (7667731).

130351121 is an equidigital number, since it uses as much as digits as its factorization.

130351121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7667730.

The product of its (nonzero) digits is 90, while the sum is 17.

The square root of 130351121 is about 11417.1415424352. The cubic root of 130351121 is about 507.0353708139.

The spelling of 130351121 in words is "one hundred thirty million, three hundred fifty-one thousand, one hundred twenty-one".

Divisors: 1 17 7667713 130351121