Search a number
-
+
131090313 = 343696771
BaseRepresentation
bin1111101000001…
…00011110001001
3100010200002002210
413310010132021
5232024342223
621001415333
73151151334
oct764043611
9303602083
10131090313
1167aa7102
1237a9a549
132120ab43
14135a561b
15b796893
hex7d04789

131090313 has 4 divisors (see below), whose sum is σ = 174787088. Its totient is φ = 87393540.

The previous prime is 131090293. The next prime is 131090357. The reversal of 131090313 is 313090131.

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 not a de Polignac number, because 131090313 - 26 = 131090249 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 131090313.

It is not an unprimeable number, because it can be changed into a prime (131090513) 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, 21848383 + ... + 21848388.

It is an arithmetic number, because the mean of its divisors is an integer number (43696772).

Almost surely, 2131090313 is an apocalyptic number.

It is an amenable number.

131090313 is a deficient number, since it is larger than the sum of its proper divisors (43696775).

131090313 is an equidigital number, since it uses as much as digits as its factorization.

131090313 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43696774.

The product of its (nonzero) digits is 243, while the sum is 21.

The square root of 131090313 is about 11449.4678042257. The cubic root of 131090313 is about 507.9919928161.

The spelling of 131090313 in words is "one hundred thirty-one million, ninety thousand, three hundred thirteen".

Divisors: 1 3 43696771 131090313