343804431 has 4 divisors (see below), whose sum is σ = 458405912. Its totient is φ = 229202952.

The previous prime is 343804427. The next prime is 343804463. The reversal of 343804431 is 134408343.

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

It is not a de Polignac number, because 343804431 - 2² = 343804427 is a prime.

It is a super-2 number, since 2×343804431² = 236402973550467522, 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 (343804471) 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, 57300736 + ... + 57300741.

It is an arithmetic number, because the mean of its divisors is an integer number (114601478).

Almost surely, 2^343804431 is an apocalyptic number.

343804431 is a deficient number, since it is larger than the sum of its proper divisors (114601481).

343804431 is a wasteful number, since it uses less digits than its factorization.

343804431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 114601480.

The product of its (nonzero) digits is 13824, while the sum is 30.

The square root of 343804431 is about 18541.9640545440. The cubic root of 343804431 is about 700.5468047253.

The spelling of 343804431 in words is "three hundred forty-three million, eight hundred four thousand, four hundred thirty-one".