351630249 has 16 divisors (see below), whose sum is σ = 494164800. Its totient is φ = 222063296.

The previous prime is 351630239. The next prime is 351630281. The reversal of 351630249 is 942036153.

It is a cyclic number.

It is not a de Polignac number, because 351630249 - 2⁵ = 351630217 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (351630239) 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 15 ways as a sum of consecutive naturals, for example, 33519 + ... + 42740.

It is an arithmetic number, because the mean of its divisors is an integer number (30885300).

Almost surely, 2^351630249 is an apocalyptic number.

It is an amenable number.

351630249 is a deficient number, since it is larger than the sum of its proper divisors (142534551).

351630249 is a wasteful number, since it uses less digits than its factorization.

351630249 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 76344.

The product of its (nonzero) digits is 19440, while the sum is 33.

The square root of 351630249 is about 18751.8065529698. The cubic root of 351630249 is about 705.8223551044.

The spelling of 351630249 in words is "three hundred fifty-one million, six hundred thirty thousand, two hundred forty-nine".