31233021023220 has 48 divisors (see below), whose sum is σ = 87666279126720. Its totient is φ = 8308441771776.

The previous prime is 31233021023201. The next prime is 31233021023227. The reversal of 31233021023220 is 2232012033213.

31233021023220 is digitally balanced in base 6, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31233021023227) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 636345082 + ... + 636394161.

It is an arithmetic number, because the mean of its divisors is an integer number (1826380815140).

Almost surely, 2^{31233021023220} is an apocalyptic number.

31233021023220 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

31233021023220 is an abundant number, since it is smaller than the sum of its proper divisors (56433258103500).

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

31233021023220 is a wasteful number, since it uses less digits than its factorization.

31233021023220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1272739664 (or 1272739662 counting only the distinct ones).

The product of its (nonzero) digits is 2592, while the sum is 24.

Adding to 31233021023220 its reverse (2232012033213), we get a palindrome (33465033056433).

The spelling of 31233021023220 in words is "thirty-one trillion, two hundred thirty-three billion, twenty-one million, twenty-three thousand, two hundred twenty".