31233021130220 has 96 divisors (see below), whose sum is σ = 84974049484800. Its totient is φ = 9364487065344.

The previous prime is 31233021130193. The next prime is 31233021130279. The reversal of 31233021130220 is 2203112033213.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 451570700 + ... + 451639859.

It is an arithmetic number, because the mean of its divisors is an integer number (885146348800).

Almost surely, 2^{31233021130220} is an apocalyptic number.

It is an amenable number.

31233021130220 is an abundant number, since it is smaller than the sum of its proper divisors (53741028354580).

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

31233021130220 is a wasteful number, since it uses less digits than its factorization.

31233021130220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 903210607 (or 903210605 counting only the distinct ones).

The product of its (nonzero) digits is 1296, while the sum is 23.

Adding to 31233021130220 its reverse (2203112033213), we get a palindrome (33436133163433).

The spelling of 31233021130220 in words is "thirty-one trillion, two hundred thirty-three billion, twenty-one million, one hundred thirty thousand, two hundred twenty".