31132320323312 has 40 divisors (see below), whose sum is σ = 64973160305760. Its totient is φ = 14365583159040.

The previous prime is 31132320323243. The next prime is 31132320323317. The reversal of 31132320323312 is 21332302323113.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31132320323317) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 15620639 + ... + 17500542.

It is an arithmetic number, because the mean of its divisors is an integer number (1624329007644).

Almost surely, 2^{31132320323312} is an apocalyptic number.

It is an amenable number.

31132320323312 is an abundant number, since it is smaller than the sum of its proper divisors (33840839982448).

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

31132320323312 is a wasteful number, since it uses less digits than its factorization.

31132320323312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33125721 (or 33125715 counting only the distinct ones).

The product of its (nonzero) digits is 11664, while the sum is 29.

Adding to 31132320323312 its reverse (21332302323113), we get a palindrome (52464622646425).

The spelling of 31132320323312 in words is "thirty-one trillion, one hundred thirty-two billion, three hundred twenty million, three hundred twenty-three thousand, three hundred twelve".