331330231220 has 48 divisors (see below), whose sum is σ = 702090946368. Its totient is φ = 131333045760.

The previous prime is 331330231213. The next prime is 331330231247. The reversal of 331330231220 is 22132033133.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 14513615 + ... + 14536425.

It is an arithmetic number, because the mean of its divisors is an integer number (14626894716).

Almost surely, 2^331330231220 is an apocalyptic number.

It is an amenable number.

331330231220 is an abundant number, since it is smaller than the sum of its proper divisors (370760715148).

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

331330231220 is a wasteful number, since it uses less digits than its factorization.

331330231220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29360 (or 29358 counting only the distinct ones).

The product of its (nonzero) digits is 1944, while the sum is 23.

Adding to 331330231220 its reverse (22132033133), we get a palindrome (353462264353).

The spelling of 331330231220 in words is "three hundred thirty-one billion, three hundred thirty million, two hundred thirty-one thousand, two hundred twenty".