31212122323304 has 64 divisors (see below), whose sum is σ = 63271725316800. Its totient is φ = 14349120731136.

The previous prime is 31212122323303. The next prime is 31212122323307. The reversal of 31212122323304 is 40332322121213.

It is not an unprimeable number, because it can be changed into a prime (31212122323303) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 76112687 + ... + 76521665.

It is an arithmetic number, because the mean of its divisors is an integer number (988620708075).

Almost surely, 2^{31212122323304} is an apocalyptic number.

It is an amenable number.

31212122323304 is an abundant number, since it is smaller than the sum of its proper divisors (32059602993496).

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

31212122323304 is a wasteful number, since it uses less digits than its factorization.

31212122323304 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 411874 (or 411870 counting only the distinct ones).

The product of its (nonzero) digits is 10368, while the sum is 29.

Adding to 31212122323304 its reverse (40332322121213), we get a palindrome (71544444444517).

The spelling of 31212122323304 in words is "thirty-one trillion, two hundred twelve billion, one hundred twenty-two million, three hundred twenty-three thousand, three hundred four".