351352021 has 4 divisors (see below), whose sum is σ = 357307200. Its totient is φ = 345396844.

The previous prime is 351352019. The next prime is 351352049. The reversal of 351352021 is 120253153.

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 351352021 - 2¹ = 351352019 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 351351983 and 351352001.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (351352051) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2977501 + ... + 2977618.

It is an arithmetic number, because the mean of its divisors is an integer number (89326800).

Almost surely, 2^351352021 is an apocalyptic number.

It is an amenable number.

351352021 is a deficient number, since it is larger than the sum of its proper divisors (5955179).

351352021 is an equidigital number, since it uses as much as digits as its factorization.

351352021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5955178.

The product of its (nonzero) digits is 900, while the sum is 22.

The square root of 351352021 is about 18744.3863863291. The cubic root of 351352021 is about 705.6361449582.

The spelling of 351352021 in words is "three hundred fifty-one million, three hundred fifty-two thousand, twenty-one".