31103310312212 has 12 divisors (see below), whose sum is σ = 54451465602996. Its totient is φ = 15545748711360.

The previous prime is 31103310312211. The next prime is 31103310312259. The reversal of 31103310312212 is 21221301330113.

It can be written as a sum of positive squares in 2 ways, for example, as 11521924204816 + 19581386107396 = 3394396^2 + 4425086^2 .

It is a super-3 number, since 3×31103310312212³ (a number of 41 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31103310312211) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1476599339 + ... + 1476620402.

It is an arithmetic number, because the mean of its divisors is an integer number (4537622133583).

Almost surely, 2^{31103310312212} is an apocalyptic number.

It is an amenable number.

31103310312212 is a deficient number, since it is larger than the sum of its proper divisors (23348155290784).

31103310312212 is a wasteful number, since it uses less digits than its factorization.

31103310312212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2953222378 (or 2953222376 counting only the distinct ones).

The product of its (nonzero) digits is 648, while the sum is 23.

Adding to 31103310312212 its reverse (21221301330113), we get a palindrome (52324611642325).

The spelling of 31103310312212 in words is "thirty-one trillion, one hundred three billion, three hundred ten million, three hundred twelve thousand, two hundred twelve".