343509477 has 16 divisors (see below), whose sum is σ = 461634240. Its totient is φ = 227203200.

The previous prime is 343509461. The next prime is 343509533. The reversal of 343509477 is 774905343.

It is not a de Polignac number, because 343509477 - 2⁴ = 343509461 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (343509407) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 265849 + ... + 267137.

It is an arithmetic number, because the mean of its divisors is an integer number (28852140).

Almost surely, 2^343509477 is an apocalyptic number.

It is an amenable number.

343509477 is a deficient number, since it is larger than the sum of its proper divisors (118124763).

343509477 is a wasteful number, since it uses less digits than its factorization.

343509477 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1924.

The product of its (nonzero) digits is 317520, while the sum is 42.

The square root of 343509477 is about 18534.0086597584. The cubic root of 343509477 is about 700.3464115350.

The spelling of 343509477 in words is "three hundred forty-three million, five hundred nine thousand, four hundred seventy-seven".