351640434 has 16 divisors (see below), whose sum is σ = 705684672. Its totient is φ = 116812848.

The previous prime is 351640433. The next prime is 351640439. The reversal of 351640434 is 434046153.

It is not an unprimeable number, because it can be changed into a prime (351640433) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 98254 + ... + 101769.

It is an arithmetic number, because the mean of its divisors is an integer number (44105292).

Almost surely, 2^351640434 is an apocalyptic number.

351640434 is an abundant number, since it is smaller than the sum of its proper divisors (354044238).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

351640434 is a wasteful number, since it uses less digits than its factorization.

351640434 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 200321.

The product of its (nonzero) digits is 17280, while the sum is 30.

The square root of 351640434 is about 18752.0781248373. The cubic root of 351640434 is about 705.8291697734.

Adding to 351640434 its reverse (434046153), we get a palindrome (785686587).

The spelling of 351640434 in words is "three hundred fifty-one million, six hundred forty thousand, four hundred thirty-four".