31233043040 has 96 divisors (see below), whose sum is σ = 74277453600. Its totient is φ = 12410671104.

The previous prime is 31233043031. The next prime is 31233043073. The reversal of 31233043040 is 4034033213.

It is a junction number, because it is equal to n+sod(n) for n = 31233042997 and 31233043015.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 17477027 + ... + 17478813.

It is an arithmetic number, because the mean of its divisors is an integer number (773723475).

Almost surely, 2^31233043040 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 31233043040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (37138726800).

31233043040 is an abundant number, since it is smaller than the sum of its proper divisors (43044410560).

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

31233043040 is a wasteful number, since it uses less digits than its factorization.

31233043040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2464 (or 2456 counting only the distinct ones).

The product of its (nonzero) digits is 2592, while the sum is 23.

Adding to 31233043040 its reverse (4034033213), we get a palindrome (35267076253).

The spelling of 31233043040 in words is "thirty-one billion, two hundred thirty-three million, forty-three thousand, forty".