31212130331022 has 16 divisors (see below), whose sum is σ = 62424315408720. Its totient is φ = 10404034319232.

The previous prime is 31212130331017. The next prime is 31212130331071. The reversal of 31212130331022 is 22013303121213.

It is a junction number, because it is equal to n+sod(n) for n = 31212130330983 and 31212130331001.

It is a congruent number.

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 7 ways as a sum of consecutive naturals, for example, 12298968 + ... + 14618100.

It is an arithmetic number, because the mean of its divisors is an integer number (3901519713045).

Almost surely, 2^{31212130331022} is an apocalyptic number.

31212130331022 is an abundant number, since it is smaller than the sum of its proper divisors (31212185077698).

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

31212130331022 is a wasteful number, since it uses less digits than its factorization.

31212130331022 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4562227.

The product of its (nonzero) digits is 1296, while the sum is 24.

Adding to 31212130331022 its reverse (22013303121213), we get a palindrome (53225433452235).

The spelling of 31212130331022 in words is "thirty-one trillion, two hundred twelve billion, one hundred thirty million, three hundred thirty-one thousand, twenty-two".