31411440331312 has 160 divisors (see below), whose sum is σ = 66593037772800. Its totient is φ = 14298521241600.

The previous prime is 31411440331241. The next prime is 31411440331319. The reversal of 31411440331312 is 21313304411413.

It is a Harshad number since it is a multiple of its sum of digits (31).

It is not an unprimeable number, because it can be changed into a prime (31411440331319) 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, 778242012 + ... + 778282372.

It is an arithmetic number, because the mean of its divisors is an integer number (416206486080).

Almost surely, 2^{31411440331312} 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 31411440331312, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (33296518886400).

31411440331312 is an abundant number, since it is smaller than the sum of its proper divisors (35181597441488).

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

31411440331312 is a wasteful number, since it uses less digits than its factorization.

31411440331312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40995 (or 40989 counting only the distinct ones).

The product of its (nonzero) digits is 10368, while the sum is 31.

Adding to 31411440331312 its reverse (21313304411413), we get a palindrome (52724744742725).

The spelling of 31411440331312 in words is "thirty-one trillion, four hundred eleven billion, four hundred forty million, three hundred thirty-one thousand, three hundred twelve".