351218238 has 64 divisors (see below), whose sum is σ = 829204992. Its totient is φ = 97090560.

The previous prime is 351218237. The next prime is 351218267. The reversal of 351218238 is 832812153.

It is a junction number, because it is equal to n+sod(n) for n = 351218199 and 351218208.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (351218237) 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 31 ways as a sum of consecutive naturals, for example, 203218 + ... + 204938.

It is an arithmetic number, because the mean of its divisors is an integer number (12956328).

Almost surely, 2^351218238 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 351218238, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (414602496).

351218238 is an abundant number, since it is smaller than the sum of its proper divisors (477986754).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

351218238 is a wasteful number, since it uses less digits than its factorization.

351218238 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1889.

The product of its digits is 11520, while the sum is 33.

The square root of 351218238 is about 18740.8174314783. The cubic root of 351218238 is about 705.5465727732.

The spelling of 351218238 in words is "three hundred fifty-one million, two hundred eighteen thousand, two hundred thirty-eight".