Search a number
-
+
130944133 = 660719819
BaseRepresentation
bin1111100111000…
…00110010000101
3100010101122120201
413303200302011
5232010203013
620554330501
73150002215
oct763406205
9303348521
10130944133
1167a072a1
1237a29a31
1321189448
1413568245
15b7683dd
hex7ce0c85

130944133 has 4 divisors (see below), whose sum is σ = 130970560. Its totient is φ = 130917708.

The previous prime is 130944109. The next prime is 130944137. The reversal of 130944133 is 331449031.

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, and also an emirpimes, since its reverse is a distinct semiprime: 331449031 = 437708117.

It is a 3-Lehmer number, since φ(130944133) divides (130944133-1)3.

It is a cyclic number.

It is not a de Polignac number, because 130944133 - 25 = 130944101 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 (130944137) 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 3 ways as a sum of consecutive naturals, for example, 3303 + ... + 16516.

It is an arithmetic number, because the mean of its divisors is an integer number (32742640).

It is a Poulet number, since it divides 2130944132-1.

Almost surely, 2130944133 is an apocalyptic number.

130944133 is the 6607-th octagonal number.

It is an amenable number.

130944133 is a deficient number, since it is larger than the sum of its proper divisors (26427).

130944133 is an equidigital number, since it uses as much as digits as its factorization.

130944133 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26426.

The product of its (nonzero) digits is 3888, while the sum is 28.

The square root of 130944133 is about 11443.0823207735. The cubic root of 130944133 is about 507.8031004234.

The spelling of 130944133 in words is "one hundred thirty million, nine hundred forty-four thousand, one hundred thirty-three".

Divisors: 1 6607 19819 130944133