343891885 has 4 divisors (see below), whose sum is σ = 412670268. Its totient is φ = 275113504.

The previous prime is 343891879. The next prime is 343891913. The reversal of 343891885 is 588198343.

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 37711881 + 306180004 = 6141^2 + 17498^2 .

It is a cyclic number.

It is not a de Polignac number, because 343891885 - 2⁵ = 343891853 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 34389184 + ... + 34389193.

It is an arithmetic number, because the mean of its divisors is an integer number (103167567).

Almost surely, 2^343891885 is an apocalyptic number.

It is an amenable number.

343891885 is a deficient number, since it is larger than the sum of its proper divisors (68778383).

343891885 is an equidigital number, since it uses as much as digits as its factorization.

343891885 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 68778382.

The product of its digits is 829440, while the sum is 49.

The square root of 343891885 is about 18544.3221768821. The cubic root of 343891885 is about 700.6061993701.

The spelling of 343891885 in words is "three hundred forty-three million, eight hundred ninety-one thousand, eight hundred eighty-five".