2031311220330 has 32 divisors (see below), whose sum is σ = 5571596490624. Its totient is φ = 464299707456.

The previous prime is 2031311220329. The next prime is 2031311220343. The reversal of 2031311220330 is 330221131302.

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 = 2031311220297 and 2031311220306.

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, 4836455077 + ... + 4836455496.

It is an arithmetic number, because the mean of its divisors is an integer number (174112390332).

Almost surely, 2^{2031311220330} is an apocalyptic number.

2031311220330 is an abundant number, since it is smaller than the sum of its proper divisors (3540285270294).

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

2031311220330 is a wasteful number, since it uses less digits than its factorization.

2031311220330 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9672910590.

The product of its (nonzero) digits is 648, while the sum is 21.

Adding to 2031311220330 its reverse (330221131302), we get a palindrome (2361532351632).

The spelling of 2031311220330 in words is "two trillion, thirty-one billion, three hundred eleven million, two hundred twenty thousand, three hundred thirty".