3431321220 has 48 divisors (see below), whose sum is σ = 9613941120. Its totient is φ = 914424576.

The previous prime is 3431321203. The next prime is 3431321227. The reversal of 3431321220 is 221231343.

It is not an unprimeable number, because it can be changed into a prime (3431321227) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 78769 + ... + 114311.

It is an arithmetic number, because the mean of its divisors is an integer number (200290440).

Almost surely, 2^3431321220 is an apocalyptic number.

3431321220 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

3431321220 is an abundant number, since it is smaller than the sum of its proper divisors (6182619900).

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

3431321220 is a wasteful number, since it uses less digits than its factorization.

3431321220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37164 (or 37162 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 21.

The square root of 3431321220 is about 58577.4804852513. The cubic root of 3431321220 is about 1508.2978964098.

Adding to 3431321220 its reverse (221231343), we get a palindrome (3652552563).

The spelling of 3431321220 in words is "three billion, four hundred thirty-one million, three hundred twenty-one thousand, two hundred twenty".