31233000012220 has 12 divisors (see below), whose sum is σ = 65589300025704. Its totient is φ = 12493200004880.

The previous prime is 31233000012167. The next prime is 31233000012259. The reversal of 31233000012220 is 2221000033213.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 780825000286 + ... + 780825000325.

It is an arithmetic number, because the mean of its divisors is an integer number (5465775002142).

Almost surely, 2^{31233000012220} is an apocalyptic number.

It is an amenable number.

31233000012220 is an abundant number, since it is smaller than the sum of its proper divisors (34356300013484).

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

31233000012220 is a wasteful number, since it uses less digits than its factorization.

31233000012220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1561650000620 (or 1561650000618 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 19.

Adding to 31233000012220 its reverse (2221000033213), we get a palindrome (33454000045433).

The spelling of 31233000012220 in words is "thirty-one trillion, two hundred thirty-three billion, twelve thousand, two hundred twenty".