351930421 has 8 divisors (see below), whose sum is σ = 361687040. Its totient is φ = 342186768.

The previous prime is 351930419. The next prime is 351930451. The reversal of 351930421 is 124039153.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 351930421 - 2¹ = 351930419 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 351930421.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (351930451) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 82540 + ... + 86698.

It is an arithmetic number, because the mean of its divisors is an integer number (45210880).

Almost surely, 2^351930421 is an apocalyptic number.

It is an amenable number.

351930421 is a deficient number, since it is larger than the sum of its proper divisors (9756619).

351930421 is a wasteful number, since it uses less digits than its factorization.

351930421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6483.

The product of its (nonzero) digits is 3240, while the sum is 28.

The square root of 351930421 is about 18759.8086610711. The cubic root of 351930421 is about 706.0231416308.

Adding to 351930421 its reverse (124039153), we get a palindrome (475969574).

The spelling of 351930421 in words is "three hundred fifty-one million, nine hundred thirty thousand, four hundred twenty-one".