343954403 has 4 divisors (see below), whose sum is σ = 370412448. Its totient is φ = 317496360.

The previous prime is 343954399. The next prime is 343954423. The reversal of 343954403 is 304459343.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 304459343 = 16069 ⋅18947.

It is a cyclic number.

It is not a de Polignac number, because 343954403 - 2² = 343954399 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (343954423) 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, 13229003 + ... + 13229028.

It is an arithmetic number, because the mean of its divisors is an integer number (92603112).

Almost surely, 2^343954403 is an apocalyptic number.

343954403 is a deficient number, since it is larger than the sum of its proper divisors (26458045).

343954403 is a wasteful number, since it uses less digits than its factorization.

343954403 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26458044.

The product of its (nonzero) digits is 77760, while the sum is 35.

The square root of 343954403 is about 18546.0077375159. The cubic root of 343954403 is about 700.6486524843.

The spelling of 343954403 in words is "three hundred forty-three million, nine hundred fifty-four thousand, four hundred three".