343431009 has 40 divisors (see below), whose sum is σ = 542025792. Its totient is φ = 216263520.

The previous prime is 343430993. The next prime is 343431019. The reversal of 343431009 is 900134343.

343431009 is a `hidden beast` number, since 343 + 4 + 310 + 0 + 9 = 666.

It is not a de Polignac number, because 343431009 - 2⁴ = 343430993 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (343431019) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 153519 + ... + 155739.

Almost surely, 2^343431009 is an apocalyptic number.

It is an amenable number.

343431009 is a deficient number, since it is larger than the sum of its proper divisors (198594783).

343431009 is a wasteful number, since it uses less digits than its factorization.

343431009 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2339 (or 2330 counting only the distinct ones).

The product of its (nonzero) digits is 3888, while the sum is 27.

The square root of 343431009 is about 18531.8916735448. The cubic root of 343431009 is about 700.2930806753.

It can be divided in two parts, 3434 and 31009, that added together give a palindrome (34443).

The spelling of 343431009 in words is "three hundred forty-three million, four hundred thirty-one thousand, nine".