331220130 has 32 divisors (see below), whose sum is σ = 795844224. Its totient is φ = 88223616.

The previous prime is 331220111. The next prime is 331220137. The reversal of 331220130 is 31022133.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is not an unprimeable number, because it can be changed into a prime (331220137) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 22219 + ... + 34001.

It is an arithmetic number, because the mean of its divisors is an integer number (24870132).

Almost surely, 2^331220130 is an apocalyptic number.

331220130 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

331220130 is an abundant number, since it is smaller than the sum of its proper divisors (464624094).

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

331220130 is a wasteful number, since it uses less digits than its factorization.

331220130 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12730.

The product of its (nonzero) digits is 108, while the sum is 15.

The square root of 331220130 is about 18199.4541126925. The cubic root of 331220130 is about 691.8929537493.

Adding to 331220130 its reverse (31022133), we get a palindrome (362242263).

The spelling of 331220130 in words is "three hundred thirty-one million, two hundred twenty thousand, one hundred thirty".