31301130323320 has 128 divisors (see below), whose sum is σ = 82761922031040. Its totient is φ = 10503895818240.

The previous prime is 31301130323317. The next prime is 31301130323363. The reversal of 31301130323320 is 2332303110313.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 20974602 + ... + 22417318.

Almost surely, 2^{31301130323320} 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 31301130323320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (41380961015520).

31301130323320 is an abundant number, since it is smaller than the sum of its proper divisors (51460791707720).

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

31301130323320 is a wasteful number, since it uses less digits than its factorization.

31301130323320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1446545 (or 1446541 counting only the distinct ones).

The product of its (nonzero) digits is 2916, while the sum is 25.

Adding to 31301130323320 its reverse (2332303110313), we get a palindrome (33633433433633).

The spelling of 31301130323320 in words is "thirty-one trillion, three hundred one billion, one hundred thirty million, three hundred twenty-three thousand, three hundred twenty".