31233222055020 has 48 divisors (see below), whose sum is σ = 87453323244000. Its totient is φ = 8328830501376.

The previous prime is 31233222055019. The next prime is 31233222055081. The reversal of 31233222055020 is 2055022233213.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 21114606 + ... + 22545354.

It is an arithmetic number, because the mean of its divisors is an integer number (1821944234250).

Almost surely, 2^{31233222055020} is an apocalyptic number.

31233222055020 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

31233222055020 is an abundant number, since it is smaller than the sum of its proper divisors (56220101188980).

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

31233222055020 is a wasteful number, since it uses less digits than its factorization.

31233222055020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1794594 (or 1794592 counting only the distinct ones).

The product of its (nonzero) digits is 21600, while the sum is 30.

Adding to 31233222055020 its reverse (2055022233213), we get a palindrome (33288244288233).

The spelling of 31233222055020 in words is "thirty-one trillion, two hundred thirty-three billion, two hundred twenty-two million, fifty-five thousand, twenty".