Search a number
-
+
311047 = 1128277
BaseRepresentation
bin1001011111100000111
3120210200021
41023330013
534423142
610400011
72433562
oct1137407
9523607
10311047
111a2770
12130007
13ab769
14814d9
1562267
hex4bf07

311047 has 4 divisors (see below), whose sum is σ = 339336. Its totient is φ = 282760.

The previous prime is 311041. The next prime is 311099. The reversal of 311047 is 740113.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 311047 - 211 = 308999 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 311047.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (311041) 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, 14128 + ... + 14149.

It is an arithmetic number, because the mean of its divisors is an integer number (84834).

2311047 is an apocalyptic number.

311047 is a deficient number, since it is larger than the sum of its proper divisors (28289).

311047 is a wasteful number, since it uses less digits than its factorization.

311047 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28288.

The product of its (nonzero) digits is 84, while the sum is 16.

The square root of 311047 is about 557.7158774860. The cubic root of 311047 is about 67.7551023513.

The spelling of 311047 in words is "three hundred eleven thousand, forty-seven", and thus it is an iban number.

Divisors: 1 11 28277 311047