31311302030112 has 192 divisors, whose sum is σ = 88981883375616. Its totient is φ = 9583459107840.

The previous prime is 31311302030093. The next prime is 31311302030123. The reversal of 31311302030112 is 21103020311313.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 357020187 + ... + 357107877.

It is an arithmetic number, because the mean of its divisors is an integer number (463447309248).

Almost surely, 2^{31311302030112} is an apocalyptic number.

31311302030112 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 31311302030112, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (44490941687808).

31311302030112 is an abundant number, since it is smaller than the sum of its proper divisors (57670581345504).

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

31311302030112 is a wasteful number, since it uses less digits than its factorization.

31311302030112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 89223 (or 89215 counting only the distinct ones).

The product of its (nonzero) digits is 324, while the sum is 21.

Adding to 31311302030112 its reverse (21103020311313), we get a palindrome (52414322341425).

The spelling of 31311302030112 in words is "thirty-one trillion, three hundred eleven billion, three hundred two million, thirty thousand, one hundred twelve".