31001003302212 has 144 divisors (see below), whose sum is σ = 82930995987840. Its totient is φ = 9737250195456.

The previous prime is 31001003302187. The next prime is 31001003302279. The reversal of 31001003302212 is 21220330010013.

31001003302212 is a `hidden beast` number, since 3 + 10 + 0 + 100 + 330 + 221 + 2 = 666.

It is a super-2 number, since 2×31001003302212² (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 an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 487351713 + ... + 487415319.

It is an arithmetic number, because the mean of its divisors is an integer number (575909694360).

Almost surely, 2^{31001003302212} 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 31001003302212, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (41465497993920).

31001003302212 is an abundant number, since it is smaller than the sum of its proper divisors (51929992685628).

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

31001003302212 is a wasteful number, since it uses less digits than its factorization.

31001003302212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 67450 (or 67445 counting only the distinct ones).

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

Adding to 31001003302212 its reverse (21220330010013), we get a palindrome (52221333312225).

The spelling of 31001003302212 in words is "thirty-one trillion, one billion, three million, three hundred two thousand, two hundred twelve".