334228781 has 4 divisors (see below), whose sum is σ = 334282332. Its totient is φ = 334175232.

The previous prime is 334228673. The next prime is 334228813. The reversal of 334228781 is 187822433.

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

It can be written as a sum of positive squares in 2 ways, for example, as 215091556 + 119137225 = 14666^2 + 10915^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-334228781 is a prime.

It is a super-2 number, since 2×334228781² = 223417756097491922, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (334288781) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 15956 + ... + 30381.

It is an arithmetic number, because the mean of its divisors is an integer number (83570583).

Almost surely, 2^334228781 is an apocalyptic number.

It is an amenable number.

334228781 is a deficient number, since it is larger than the sum of its proper divisors (53551).

334228781 is an equidigital number, since it uses as much as digits as its factorization.

334228781 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 53550.

The product of its digits is 64512, while the sum is 38.

The square root of 334228781 is about 18281.9249807016. The cubic root of 334228781 is about 693.9815879587.

It can be divided in two parts, 3342 and 28781, that added together give a palindrome (32123).

The spelling of 334228781 in words is "three hundred thirty-four million, two hundred twenty-eight thousand, seven hundred eighty-one".