31020320130100 has 144 divisors (see below), whose sum is σ = 80984691648000. Its totient is φ = 10075110030720.

The previous prime is 31020320130097. The next prime is 31020320130161. The reversal of 31020320130100 is 103102302013.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 227348499 + ... + 227484901.

It is an arithmetic number, because the mean of its divisors is an integer number (562393692000).

Almost surely, 2^{31020320130100} 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 31020320130100, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (40492345824000).

31020320130100 is an abundant number, since it is smaller than the sum of its proper divisors (49964371517900).

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

31020320130100 is a wasteful number, since it uses less digits than its factorization.

31020320130100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 153542 (or 153535 counting only the distinct ones).

The product of its (nonzero) digits is 108, while the sum is 16.

Adding to 31020320130100 its reverse (103102302013), we get a palindrome (31123422432113).

The spelling of 31020320130100 in words is "thirty-one trillion, twenty billion, three hundred twenty million, one hundred thirty thousand, one hundred".