31233000000 has 392 divisors, whose sum is σ = 107154878400. Its totient is φ = 8019200000.

The previous prime is 31232999969. The next prime is 31233000017. The reversal of 31233000000 is 33213.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (12).

It is a self number, because there is not a number n which added to its sum of digits gives 31233000000.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 55 ways as a sum of consecutive naturals, for example, 86999821 + ... + 87000179.

Almost surely, 2^31233000000 is an apocalyptic number.

31233000000 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 31233000000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (53577439200).

31233000000 is an abundant number, since it is smaller than the sum of its proper divisors (75921878400).

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

31233000000 is an frugal number, since it uses more digits than its factorization.

31233000000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 433 (or 398 counting only the distinct ones).

The product of its (nonzero) digits is 54, while the sum is 12.

Adding to 31233000000 its reverse (33213), we get a palindrome (31233033213).

The spelling of 31233000000 in words is "thirty-one billion, two hundred thirty-three million", and thus it is an aban number.