350305021 has 4 divisors (see below), whose sum is σ = 382150944. Its totient is φ = 318459100.

The previous prime is 350304953. The next prime is 350305091. The reversal of 350305021 is 120503053.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 350305021 - 2⁷ = 350304893 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 350305021.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (350305091) 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 3 ways as a sum of consecutive naturals, for example, 15922945 + ... + 15922966.

It is an arithmetic number, because the mean of its divisors is an integer number (95537736).

Almost surely, 2^350305021 is an apocalyptic number.

It is an amenable number.

350305021 is a deficient number, since it is larger than the sum of its proper divisors (31845923).

350305021 is a wasteful number, since it uses less digits than its factorization.

350305021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31845922.

The product of its (nonzero) digits is 450, while the sum is 19.

The square root of 350305021 is about 18716.4371876701. The cubic root of 350305021 is about 704.9345351080.

Adding to 350305021 its reverse (120503053), we get a palindrome (470808074).

It can be divided in two parts, 350 and 305021, that added together give a triangular number (305371 = T₇₈₁).

The spelling of 350305021 in words is "three hundred fifty million, three hundred five thousand, twenty-one".