Search a number
-
+
346981 = 467743
BaseRepresentation
bin1010100101101100101
3122121222011
41110231211
542100411
611234221
72643415
oct1245545
9577864
10346981
11217768
12148971
13c1c1b
1490645
156cc21
hex54b65

346981 has 4 divisors (see below), whose sum is σ = 348192. Its totient is φ = 345772.

The previous prime is 346963. The next prime is 347003. The reversal of 346981 is 189643.

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 a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 346981 - 29 = 346469 is a prime.

It is a super-2 number, since 2×3469812 = 240791628722, which contains 22 as substring.

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 346981.

It is not an unprimeable number, because it can be changed into a prime (346961) 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, 96 + ... + 838.

It is an arithmetic number, because the mean of its divisors is an integer number (87048).

2346981 is an apocalyptic number.

It is an amenable number.

346981 is a deficient number, since it is larger than the sum of its proper divisors (1211).

346981 is an equidigital number, since it uses as much as digits as its factorization.

346981 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1210.

The product of its digits is 5184, while the sum is 31.

The square root of 346981 is about 589.0509315840. The cubic root of 346981 is about 70.2697752950.

The spelling of 346981 in words is "three hundred forty-six thousand, nine hundred eighty-one".

Divisors: 1 467 743 346981