31002323333212 has 144 divisors (see below), whose sum is σ = 71855406685440. Its totient is φ = 11551627718400.

The previous prime is 31002323333167. The next prime is 31002323333243. The reversal of 31002323333212 is 21233332320013.

It is a super-2 number, since 2×31002323333212² (a number of 28 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (28).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 298021464 + ... + 298125472.

It is an arithmetic number, because the mean of its divisors is an integer number (498995879760).

Almost surely, 2^{31002323333212} 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 31002323333212, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (35927703342720).

31002323333212 is an abundant number, since it is smaller than the sum of its proper divisors (40853083352228).

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

31002323333212 is a wasteful number, since it uses less digits than its factorization.

31002323333212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 110072 (or 110063 counting only the distinct ones).

The product of its (nonzero) digits is 11664, while the sum is 28.

Adding to 31002323333212 its reverse (21233332320013), we get a palindrome (52235655653225).

The spelling of 31002323333212 in words is "thirty-one trillion, two billion, three hundred twenty-three million, three hundred thirty-three thousand, two hundred twelve".