343781404 has 12 divisors (see below), whose sum is σ = 601945344. Its totient is φ = 171797024.

The previous prime is 343781401. The next prime is 343781411. The reversal of 343781404 is 404187343.

It is a super-2 number, since 2×343781404² = 236371307472422432, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 343781404.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (343781401) 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, 14812 + ... + 30115.

It is an arithmetic number, because the mean of its divisors is an integer number (50162112).

Almost surely, 2^343781404 is an apocalyptic number.

It is an amenable number.

343781404 is a deficient number, since it is larger than the sum of its proper divisors (258163940).

343781404 is a wasteful number, since it uses less digits than its factorization.

343781404 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 46844 (or 46842 counting only the distinct ones).

The product of its (nonzero) digits is 32256, while the sum is 34.

The square root of 343781404 is about 18541.3431012966. The cubic root of 343781404 is about 700.5311641944.

The spelling of 343781404 in words is "three hundred forty-three million, seven hundred eighty-one thousand, four hundred four".