331220203230 has 64 divisors (see below), whose sum is σ = 910037721600. Its totient is φ = 75578473344.

The previous prime is 331220203219. The next prime is 331220203231. The reversal of 331220203230 is 32302022133.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a junction number, because it is equal to n+sod(n) for n = 331220203197 and 331220203206.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (331220203231) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1220205 + ... + 1466744.

It is an arithmetic number, because the mean of its divisors is an integer number (14219339400).

Almost surely, 2^331220203230 is an apocalyptic number.

331220203230 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

331220203230 is an abundant number, since it is smaller than the sum of its proper divisors (578817518370).

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

331220203230 is a wasteful number, since it uses less digits than its factorization.

331220203230 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2687553.

The product of its (nonzero) digits is 1296, while the sum is 21.

Adding to 331220203230 its reverse (32302022133), we get a palindrome (363522225363).

The spelling of 331220203230 in words is "three hundred thirty-one billion, two hundred twenty million, two hundred three thousand, two hundred thirty".