31112230032312 has 256 divisors, whose sum is σ = 91749905694720. Its totient is φ = 8667381542400.

The previous prime is 31112230032263. The next prime is 31112230032319. The reversal of 31112230032312 is 21323003221113.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31112230032319) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 3648668193 + ... + 3648676719.

It is an arithmetic number, because the mean of its divisors is an integer number (358398069120).

Almost surely, 2^{31112230032312} 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 31112230032312, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (45874952847360).

31112230032312 is an abundant number, since it is smaller than the sum of its proper divisors (60637675662408).

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

31112230032312 is a wasteful number, since it uses less digits than its factorization.

31112230032312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12754 (or 12750 counting only the distinct ones).

The product of its (nonzero) digits is 1296, while the sum is 24.

Adding to 31112230032312 its reverse (21323003221113), we get a palindrome (52435233253425).

The spelling of 31112230032312 in words is "thirty-one trillion, one hundred twelve billion, two hundred thirty million, thirty-two thousand, three hundred twelve".