31300322112 has 84 divisors (see below), whose sum is σ = 90186759936. Its totient is φ = 10378778880.

The previous prime is 31300322099. The next prime is 31300322143. The reversal of 31300322112 is 21122300313.

31300322112 is a `hidden beast` number, since 31 + 300 + 322 + 1 + 12 = 666.

It is a super-2 number, since 2×31300322112² (a number of 22 digits) contains 22 as substring.

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

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 32238 + ... + 252269.

It is an arithmetic number, because the mean of its divisors is an integer number (1073651904).

Almost surely, 2^31300322112 is an apocalyptic number.

31300322112 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 31300322112, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (45093379968).

31300322112 is an abundant number, since it is smaller than the sum of its proper divisors (58886437824).

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

31300322112 is a wasteful number, since it uses less digits than its factorization.

31300322112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 284716 (or 284703 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 18.

Adding to 31300322112 its reverse (21122300313), we get a palindrome (52422622425).

The spelling of 31300322112 in words is "thirty-one billion, three hundred million, three hundred twenty-two thousand, one hundred twelve".