31120012301312 has 88 divisors (see below), whose sum is σ = 67882363643712. Its totient is φ = 14141852467200.

The previous prime is 31120012301281. The next prime is 31120012301333. The reversal of 31120012301312 is 21310321002113.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (88).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 44063612 + ... + 44764292.

Almost surely, 2^{31120012301312} is an apocalyptic number.

31120012301312 is a gapful number since it is divisible by the number (32) 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 31120012301312, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (33941181821856).

31120012301312 is an abundant number, since it is smaller than the sum of its proper divisors (36762351342400).

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

31120012301312 is a wasteful number, since it uses less digits than its factorization.

31120012301312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 704655 (or 704637 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 20.

Adding to 31120012301312 its reverse (21310321002113), we get a palindrome (52430333303425).

The spelling of 31120012301312 in words is "thirty-one trillion, one hundred twenty billion, twelve million, three hundred one thousand, three hundred twelve".