31330230000 has 400 divisors, whose sum is σ = 104823945600. Its totient is φ = 8055936000.

The previous prime is 31330229989. The next prime is 31330230031. The reversal of 31330230000 is 3203313.

It is a tau number, because it is divible by the number of its divisors (400).

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 192209919 + ... + 192210081.

It is an arithmetic number, because the mean of its divisors is an integer number (262059864).

Almost surely, 2^31330230000 is an apocalyptic number.

31330230000 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 31330230000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (52411972800).

31330230000 is an abundant number, since it is smaller than the sum of its proper divisors (73493715600).

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

31330230000 is a wasteful number, since it uses less digits than its factorization.

31330230000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 386 (or 365 counting only the distinct ones).

The product of its (nonzero) digits is 162, while the sum is 15.

Adding to 31330230000 its reverse (3203313), we get a palindrome (31333433313).

The spelling of 31330230000 in words is "thirty-one billion, three hundred thirty million, two hundred thirty thousand".