31110110131212 has 384 divisors, whose sum is σ = 97262824243200. Its totient is φ = 8413989696000.

The previous prime is 31110110131211. The next prime is 31110110131231. The reversal of 31110110131212 is 21213101101113.

31110110131212 is a `hidden beast` number, since 311 + 1 + 0 + 1 + 10 + 131 + 212 = 666.

31110110131212 is digitally balanced in base 5, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×31110110131212² (a number of 28 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is not an unprimeable number, because it can be changed into a prime (31110110131211) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 201179739 + ... + 201334317.

It is an arithmetic number, because the mean of its divisors is an integer number (253288604800).

Almost surely, 2^{31110110131212} 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 31110110131212, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (48631412121600).

31110110131212 is an abundant number, since it is smaller than the sum of its proper divisors (66152714111988).

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

31110110131212 is a wasteful number, since it uses less digits than its factorization.

31110110131212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 154834 (or 154826 counting only the distinct ones).

The product of its (nonzero) digits is 36, while the sum is 18.

Adding to 31110110131212 its reverse (21213101101113), we get a palindrome (52323211232325).

The spelling of 31110110131212 in words is "thirty-one trillion, one hundred ten billion, one hundred ten million, one hundred thirty-one thousand, two hundred twelve".