346881973 has 4 divisors (see below), whose sum is σ = 347563980. Its totient is φ = 346199968.

The previous prime is 346881967. The next prime is 346882027. The reversal of 346881973 is 379188643.

It is a happy number.

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 175350564 + 171531409 = 13242^2 + 13097^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-346881973 is a prime.

It is a Smith number, since the sum of its digits (49) 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 not an unprimeable number, because it can be changed into a prime (346881943) 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, 340240 + ... + 341257.

It is an arithmetic number, because the mean of its divisors is an integer number (86890995).

Almost surely, 2^346881973 is an apocalyptic number.

It is an amenable number.

346881973 is a deficient number, since it is larger than the sum of its proper divisors (682007).

346881973 is an equidigital number, since it uses as much as digits as its factorization.

346881973 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 682006.

The product of its digits is 870912, while the sum is 49.

The square root of 346881973 is about 18624.7677300953. The cubic root of 346881973 is about 702.6308975401.

The spelling of 346881973 in words is "three hundred forty-six million, eight hundred eighty-one thousand, nine hundred seventy-three".