31023113144320 has 384 divisors, whose sum is σ = 82826608475520. Its totient is φ = 11056227287040.

The previous prime is 31023113144297. The next prime is 31023113144321. The reversal of 31023113144320 is 2344131132013.

It is not an unprimeable number, because it can be changed into a prime (31023113144321) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 6883315507 + ... + 6883320013.

It is an arithmetic number, because the mean of its divisors is an integer number (215694292905).

Almost surely, 2^{31023113144320} 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 31023113144320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (41413304237760).

31023113144320 is an abundant number, since it is smaller than the sum of its proper divisors (51803495331200).

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

31023113144320 is a wasteful number, since it uses less digits than its factorization.

31023113144320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5751 (or 5731 counting only the distinct ones).

The product of its (nonzero) digits is 5184, while the sum is 28.

Adding to 31023113144320 its reverse (2344131132013), we get a palindrome (33367244276333).

The spelling of 31023113144320 in words is "thirty-one trillion, twenty-three billion, one hundred thirteen million, one hundred forty-four thousand, three hundred twenty".