349831020 has 96 divisors (see below), whose sum is σ = 1221244416. Its totient is φ = 72691200.

The previous prime is 349830961. The next prime is 349831033. The reversal of 349831020 is 20138943.

349831020 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 33241 + ... + 42480.

It is an arithmetic number, because the mean of its divisors is an integer number (12721296).

Almost surely, 2^349831020 is an apocalyptic number.

349831020 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

349831020 is an abundant number, since it is smaller than the sum of its proper divisors (871413396).

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

349831020 is a wasteful number, since it uses less digits than its factorization.

349831020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 75751 (or 75749 counting only the distinct ones).

The product of its (nonzero) digits is 5184, while the sum is 30.

The square root of 349831020 is about 18703.7702081693. The cubic root of 349831020 is about 704.6164404218.

Adding to 349831020 its reverse (20138943), we get a palindrome (369969963).

The spelling of 349831020 in words is "three hundred forty-nine million, eight hundred thirty-one thousand, twenty".