31212331313122 has 16 divisors (see below), whose sum is σ = 49499732492640. Its totient is φ = 14719657285728.

The previous prime is 31212331313113. The next prime is 31212331313129. The reversal of 31212331313122 is 22131313321213.

It is a super-2 number, since 2×31212331313122² (a number of 28 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (31212331313129) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1809192123 + ... + 1809209374.

It is an arithmetic number, because the mean of its divisors is an integer number (3093733280790).

Almost surely, 2^{31212331313122} is an apocalyptic number.

31212331313122 is a deficient number, since it is larger than the sum of its proper divisors (18287401179518).

31212331313122 is a wasteful number, since it uses less digits than its factorization.

31212331313122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3618401745.

The product of its digits is 3888, while the sum is 28.

Adding to 31212331313122 its reverse (22131313321213), we get a palindrome (53343644634335).

The spelling of 31212331313122 in words is "thirty-one trillion, two hundred twelve billion, three hundred thirty-one million, three hundred thirteen thousand, one hundred twenty-two".