13031323000 has 64 divisors (see below), whose sum is σ = 30795448320. Its totient is φ = 5160880000.

The previous prime is 13031322991. The next prime is 13031323001. The reversal of 13031323000 is 32313031.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13031323001) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 36489 + ... + 165511.

It is an arithmetic number, because the mean of its divisors is an integer number (481178880).

Almost surely, 2^13031323000 is an apocalyptic number.

13031323000 is a gapful number since it is divisible by the number (10) 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 13031323000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (15397724160).

13031323000 is an abundant number, since it is smaller than the sum of its proper divisors (17764125320).

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

13031323000 is a wasteful number, since it uses less digits than its factorization.

13031323000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 129145 (or 129131 counting only the distinct ones).

The product of its (nonzero) digits is 162, while the sum is 16.

Adding to 13031323000 its reverse (32313031), we get a palindrome (13063636031).

The spelling of 13031323000 in words is "thirteen billion, thirty-one million, three hundred twenty-three thousand".