31233222020040 has 128 divisors (see below), whose sum is σ = 100467252288000. Its totient is φ = 7739699355648.

The previous prime is 31233222019991. The next prime is 31233222020069. The reversal of 31233222020040 is 4002022233213.

It is a super-2 number, since 2×31233222020040² (a number of 28 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (24).

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 31 ways as a sum of consecutive naturals, for example, 96740125 + ... + 97062444.

It is an arithmetic number, because the mean of its divisors is an integer number (784900408500).

Almost surely, 2^{31233222020040} is an apocalyptic number.

31233222020040 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

31233222020040 is an abundant number, since it is smaller than the sum of its proper divisors (69234030267960).

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

31233222020040 is a wasteful number, since it uses less digits than its factorization.

31233222020040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 193802679 (or 193802675 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 24.

Adding to 31233222020040 its reverse (4002022233213), we get a palindrome (35235244253253).

The spelling of 31233222020040 in words is "thirty-one trillion, two hundred thirty-three billion, two hundred twenty-two million, twenty thousand, forty".