350140221 has 12 divisors (see below), whose sum is σ = 510973372. Its totient is φ = 231019776.

The previous prime is 350140199. The next prime is 350140223. The reversal of 350140221 is 122041053.

It can be written as a sum of positive squares in 2 ways, for example, as 268599321 + 81540900 = 16389^2 + 9030^2 .

It is not a de Polignac number, because 350140221 - 2⁹ = 350139709 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 350140194 and 350140203.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (350140223) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 199666 + ... + 201411.

Almost surely, 2^350140221 is an apocalyptic number.

It is an amenable number.

350140221 is a deficient number, since it is larger than the sum of its proper divisors (160833151).

350140221 is a wasteful number, since it uses less digits than its factorization.

350140221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 401180 (or 401177 counting only the distinct ones).

The product of its (nonzero) digits is 240, while the sum is 18.

The square root of 350140221 is about 18712.0341224571. The cubic root of 350140221 is about 704.8239729531.

Adding to 350140221 its reverse (122041053), we get a palindrome (472181274).

The spelling of 350140221 in words is "three hundred fifty million, one hundred forty thousand, two hundred twenty-one".